41 results on '"van der Wal, M."'
Search Results
2. Human regulatory T cells locally differentiate and are functionally heterogeneous within the inflamed arthritic joint.
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Lutter, Lisanne, van der Wal, M Marlot, Brand, Eelco C, Maschmeyer, Patrick, Vastert, Sebastiaan, Mashreghi, Mir‐Farzin, van Loosdregt, Jorg, and van Wijk, Femke
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REGULATORY T cells ,JOINT pain ,JUVENILE idiopathic arthritis ,SYNOVIAL fluid ,AUTOIMMUNE diseases ,EXPERIMENTAL arthritis - Abstract
Objective: Tregs are crucial for immune regulation, and environment‐driven adaptation of effector (e)Tregs is essential for local functioning. However, the extent of human Treg heterogeneity in inflammatory settings is unclear. Methods: We combined single‐cell RNA‐ and TCR‐sequencing on Tregs derived from three to six patients with juvenile idiopathic arthritis (JIA) to investigate the functional heterogeneity of human synovial fluid (SF)‐derived Tregs from inflamed joints. Confirmation and suppressive function of the identified Treg clusters was assessed by flow cytometry. Results: Four Treg clusters were identified; incoming, activated eTregs with either a dominant suppressive or cytotoxic profile, and GPR56+CD161+CXCL13+ Tregs. Pseudotime analysis showed differentiation towards either classical eTreg profiles or GPR56+CD161+CXCL13+ Tregs supported by TCR data. Despite its most differentiated phenotype, GPR56+CD161+CXCL13+ Tregs were shown to be suppressive. Furthermore, BATF was identified as an overarching eTreg regulator, with the novel Treg‐associated regulon BHLHE40 driving differentiation towards GPR56+CD161+CXCL13+ Tregs, and JAZF1 towards classical eTregs. Conclusion: Our study reveals a heterogeneous population of Tregs at the site of inflammation in JIA. SF Treg differentiate to a classical eTreg profile with a more dominant suppressive or cytotoxic profile that share a similar TCR repertoire, or towards GPR56+CD161+CXCL13+ Tregs with a more distinct TCR repertoire. Genes characterising GPR56+CD161+CXCL13+ Tregs were also mirrored in other T‐cell subsets in both the tumor and the autoimmune setting. Finally, the identified key regulators driving SF Treg adaptation may be interesting targets for autoimmunity or tumor interventions. [ABSTRACT FROM AUTHOR]
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- 2022
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3. T cell interaction with activated endothelial cells primes for tissue-residency.
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Wienke, Judith, Veldkamp, Saskia R., Struijf, Eva M., Yengej, Fjodor A. Yousef, van der Wal, M. Marlot, van Royen-Kerkhof, Annet, and van Wijk, Femke
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T cells ,ENDOTHELIAL cells ,IMMUNOLOGIC memory ,T cell differentiation ,CELL differentiation - Abstract
Tissue-resident memory T cells (TRM) are suspected drivers of chronic inflammation, but their induction remains unclear. Since endothelial cells (EC) are obligate interaction partners for T cells trafficking into inflamed tissues, they may play a role in TRM development. Here, we used an in vitro co-culture system of human cytokine-activated EC and FACS-sorted T cells to study the effect of EC on T(RM) cell differentiation. T cell phenotypes were assessed by flow cytometry, including proliferation measured by CellTrace Violet dilution assay. Soluble mediators were analyzed by multiplex immunoassay. Co-culture of T cells with cytokine-activated, but not resting EC induced CD69 expression without activation (CD25, Ki67) or proliferation. The dynamic of CD69 expression induced by EC was distinct from that induced by TCR triggering, with rapid induction and stable expression over 7 days. CD69 induction by activated EC was higher in memory than naive T cells, and most pronounced in CD8
+ effector memory T cells. Early CD69 induction was mostly mediated by IL-15, whereas later effects were also mediated by interactions with ICAM-1 and/or VCAM-1. CD69+ T cells displayed a phenotype associated with tissue-residency, with increased CD49a, CD103, CXCR6, PD-1 and CD57 expression, and decreased CD62L and S1PR1. ECinduced CD69+ T cells were poised for high production of pro-inflammatory cytokines and showed increased expression of T-helper 1 transcription factor T-bet. Our findings demonstrate that activated EC can induce functional specialization in T cells with sustained CD69 expression, increased cytokine response and a phenotypic profile reminiscent of TRM. Interaction with activated EC during transmigration into (inflamed) tissues thus contributes to TRM-residency priming. [ABSTRACT FROM AUTHOR]- Published
- 2022
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4. Chronically Activated T-cells Retain Their Inflammatory Properties in Common Variable Immunodeficiency.
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Berbers, Roos-Marijn, van der Wal, M. Marlot, van Montfrans, Joris M., Ellerbroek, Pauline M., Dalm, Virgil A. S. H., van Hagen, P. Martin, Leavis, Helen L., and van Wijk, Femke
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COMMON variable immunodeficiency ,REGULATORY T cells ,T cells ,COMMONS ,MUCOUS membranes - Abstract
Purpose: Immune dysregulation complications cause significant morbidity and mortality in common variable immunodeficiency (CVID), but the underlying pathophysiology is poorly understood. While CVID is primarily considered a B-cell defect, resulting in the characteristic hypogammaglobulinemia, T-cells may also contribute to immune dysregulation complications. Here, we aim to further characterize T-cell activation and regulation in CVID with immune dysregulation (CVIDid). Methods: Flow cytometry was performed to investigate T-cell differentiation, activation and intracellular cytokine production, negative regulators of immune activation, regulatory T-cells (Treg), and homing markers in 12 healthy controls, 12 CVID patients with infections only (CVIDio), and 20 CVIDid patients. Results: Both CD4 + and CD8 + T-cells in CVIDid showed an increased activation profile (HLA-DR + , Ki67 + , IFNγ +) when compared to CVIDio, with concomitant upregulation of negative regulators of immune activation PD1, LAG3, CTLA4, and TIGIT. PD1 + and LAG3 + subpopulations contained equal or increased frequencies of cells with the capacity to produce IFNγ, Ki67, and/or GzmB. The expression of PD1 correlated with serum levels of CXCL9, 10, and 11. Treg frequencies were normal to high in CVIDid, but CVIDid Tregs had reduced CTLA-4 expression, especially on CD27 + effector Tregs. Increased migratory capacity to inflamed and mucosal tissue was also observed in CVIDid T-cells. Conclusion: CVIDid was characterized by chronic activation of peripheral T-cells with preserved inflammatory potential rather than functional exhaustion, and increased tissue migratory capacity. While Treg numbers were normal in CVIDid Tregs, low levels of CTLA-4 indicate possible Treg dysfunction. Combined studies of T-cell dysfunction and circulating inflammatory proteins may direct future treatment strategies. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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5. Psychometric properties of the Dutch-Flemish PROMIS® pediatric item banks Anxiety and Depressive Symptoms in a general population.
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Klaufus, L. H., Luijten, M. A. J., Verlinden, E., van der Wal, M. F., Haverman, L., Cuijpers, P., Chinapaw, M. J. M., and Terwee, C. B.
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MENTAL depression ,PSYCHOMETRICS ,ANXIETY ,ADAPTIVE testing ,GENDER - Abstract
Purpose: This study aims to validate the Dutch-Flemish PROMIS pediatric item banks v2.0 Anxiety and Depressive Symptoms, the short forms 8a, and computerized adaptive tests (CATs) in a general Dutch population and to provide reference data. Methods: Participants (N = 2,893, aged 8–18), recruited by two internet survey providers, completed both item banks. These item banks were assessed on unidimensionality, local independence, monotonicity, Graded Response Model (GRM) item fit, and differential item functioning (DIF) for gender, age group, region, ethnicity, and language. The short forms and CATs were assessed on reliability and construct validity compared to the Revised Child Anxiety and Depression Scale short version (RCADS-22) subscales. Reference scores were calculated. Results: Both item banks showed sufficient unidimensionality, local independence, monotonicity, and GRM item fit, except for three Depressive Symptoms items that showed insufficient GRM item fit. No DIF was found when using ordinal regression analyses, except for two Depressive Symptoms items that showed DIF for language; all items showed DIF for language when using IRT PRO, except for one Anxiety item. Both short forms and CATs revealed sufficient reliability for moderate and severe levels of anxiety and depression, as well as high positive correlations with corresponding RCADS-22 subscales and slightly lower correlations with non-corresponding RCADS-22 subscales. Conclusion: The Dutch-Flemish PROMIS pediatric item banks v2.0 Anxiety and Depressive Symptoms, the short forms 8a and CATs are useful to assess and monitor anxiety and depression in a general population. Reference data are presented. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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6. Improvement in left ventricular ejection fraction after pharmacological up-titration in new-onset heart failure with reduced ejection fraction.
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Nauta, J. F., Santema, B. T., van der Wal, M. H. L., Koops, A., Warink-Riemersma, J., van Dijk, K., Inkelaar, F., Prückl, S., Suwijn, J., van Deursen, V. M., Meijers, W. C., Coster, J., Westenbrink, B. D., de Boer, R. A., Hummel, Y., van Melle, J., van Veldhuisen, D. J., van der Meer, P., and Voors, A. A.
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LEFT heart ventricle ,PHARMACOLOGY ,HEART failure ,VOLUMETRIC analysis ,ECHOCARDIOGRAPHY ,MORTALITY - Abstract
Objective: Recent studies have reported suboptimal up-titration of heart failure (HF) therapies in patients with heart failure and a reduced ejection fraction (HFrEF). Here, we report on the achieved doses after nurse-led up-titration, reasons for not achieving the target dose, subsequent changes in left ventricular ejection fraction (LVEF), and mortality. Methods: From 2012 to 2018, 378 HFrEF patients with a recent (< 3 months) diagnosis of HF were referred to a specialised HF-nurse led clinic for protocolised up-titration of guideline-directed medical therapy (GDMT). The achieved doses of GDMT at 9 months were recorded, as well as reasons for not achieving the optimal dose in all patients. Echocardiography was performed at baseline and after up-titration in 278 patients. Results: Of 345 HFrEF patients with a follow-up visit after 9 months, 69% reached ≥ 50% of the recommended dose of renin-angiotensin-system (RAS) inhibitors, 73% reached ≥ 50% of the recommended dose of beta-blockers and 77% reached ≥ 50% of the recommended dose of mineralocorticoid receptor antagonists. The main reasons for not reaching the target dose were hypotension (RAS inhibitors and beta-blockers), bradycardia (beta-blockers) and renal dysfunction (RAS inhibitors). During a median follow-up of 9 months, mean LVEF increased from 27.6% at baseline to 38.8% at follow-up. Each 5% increase in LVEF was associated with an adjusted hazard ratio of 0.84 (0.75–0.94, p = 0.002) for mortality and 0.85 (0.78–0.94, p = 0.001) for the combined endpoint of mortality and/or HF hospitalisation after a mean follow-up of 3.3 years. Conclusions: This study shows that protocolised up-titration in a nurse-led HF clinic leads to high doses of GDMT and improvement of LVEF in patients with new-onset HFrEF. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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7. Redenen om niet te vaccineren in Amsterdam en Amstelland.
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Schellekens, M. H. F. T., Stegeman, H., van der Wal, M. F., van Rijn, R. C., Nielen, A. M. A., and Schim van der Loeff, M. F.
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- 2021
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8. The effect of pre-operative blood withdrawal, with or without sequestration, on allogeneic blood product requirements.
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van der Wal, M. T., Boks, R. H., Wijers-Hille, M. J., Hofland, J., Takkenberg, J. J. M., and Bogers, A. J. J. C.
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ANEMIA prevention ,ACADEMIC medical centers ,ANALYSIS of variance ,AUTOTRANSFUSION of blood ,CARDIOPULMONARY bypass ,STATISTICAL correlation ,LONGITUDINAL method ,PREOPERATIVE care ,RANDOMIZED controlled trials ,BLIND experiment ,DESCRIPTIVE statistics ,KRUSKAL-Wallis Test - Abstract
A common effect of autologous blood withdrawal before cardiopulmonary bypass (CPB) is a decrease in haematocrit (Hct) and haemoglobin (Hb) content. A refinement of this technique is autologous blood withdrawal with the sequestration of platelet rich plasma (PRP) and red blood cells (RBCs). Methods: One hundred and four patients were included in a randomized study stratified into three groups: the autologous blood withdrawal group (Group 1), the autologous blood withdrawal group with blood loss sequestration (Group 2) and the control group (Control group). In Group 1, the amount of withdrawn blood was transfused after CPB. In Group 2, the RBCs were transfused immediately after sequestration and the PRP was transfused after the termination of CPB. In the Control group, no autologous blood withdrawal was employed. The following variables were analysed: blood loss, blood products transfusion, fluid transfusion, diuresis, haematological and coagulation data and the duration of the operation and intensive care unit stay. Results: We found no significant differences in peri-operative blood loss and transfused blood products among the three groups. There was a trend towards a lower amount of transfused fresh frozen plasma (FFP) for Group 1 (p =0.057) in the operation room (OR). The use of plasma expanders post-CPB was significantly higher in the Control group (p=0.024). RBCs coming from the auto-transfusion device were, for Group 1, significantly lower (p=0.007). The Hb and Hct values in Group 1, at start and end of CPB, were significantly lower (p=0.023-0.003 / 0.001-0.001, respectively). All other parameters were not significantly different. Conclusion: there were no significant differences between the study groups. This randomized trial shows that, although sequestration immediately after autologous blood withdrawal has no added value, autologous blood withdrawal in patients with a normal pre-operative Hb and Hct is simple, inexpensive and allows for autologous blood transfusion. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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9. Measuring ship induced waves and currents on a tidal flat in the Western Scheldt estuary.
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Schroevers, M., Huisman, B.J.A., van der Wal, M., and Terwindt, J.
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- 2011
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10. Cyanotische aangeboren hartafwijkingen.
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van den Berg, H., de Jong-van der Wal, M. A., and Beeldman-Brinkman, C. C. C.
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- 2009
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11. Attention-Deficit Hyperactivity Disorder -adhd.
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van den Berg, H., de Jong-van der Wal, M. A., and Beeldman-Brinkman, C. C. C.
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- 2009
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12. Anorexia nervosa, boulimia nervosa en binge eating (eetbuistoornis).
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van den Berg, H., de Jong-van der Wal, M. A., and Beeldman-Brinkman, C. C. C.
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- 2009
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13. Schisis.
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van den Berg, H., de Jong-van der Wal, M. A., and Beeldman-Brinkman, C. C. C.
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- 2009
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14. Acyanotische aangeboren hartafwijkingen.
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van den Berg, H., de Jong-van der Wal, M. A., and Beeldman-Brinkman, C. C. C.
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- 2009
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15. Epilepsie bij kinderen.
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van Hemert-van der Poel, J. C., Beeldman-Brinkman, C. C. C., and de Jong-van der Wal, M. A.
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- 2009
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16. Increased maternal BMI is associated with infant wheezing in early life: a prospective cohort study.
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de Vries, A., Reynolds, R. M., Seckl, J. R., van der Wal, M., Bonsel, G. J., and Vrijkotte, T. G. M.
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Rates of obesity are increasing in women of child bearing age with negative impacts on maternal and offspring health. Emerging evidence suggests in utero origins of respiratory health in offspring of obese mothers but mechanisms are unknown. Changes in maternal cortisol levels are one potential factor as cortisol levels are altered in obesity and cortisol is separately implicated in development of offspring wheeze. We aimed to assess whether increased pre-pregnancy maternal body mass index (BMI) was associated with offspring early life wheezing, and whether this was mediated by altered cortisol levels in the mother. In a prospective community-based cohort (Amsterdam Born Children and their Development cohort), women completed questionnaires during pregnancy and at 3–5 months post-delivery regarding self-history of asthma and atopy, and of wheezing of their offspring (n=4860). Pre-pregnancy BMI was recorded and serum total cortisol levels were measured in a subset of women (n=2227) at their first antenatal visit. A total of 20.2% (n=984) women were overweight or obese and 10.3% reported wheezing in their offspring. Maternal BMI was associated with offspring wheezing (1 unit (kg/m2) increase, OR: 1.03; 95% CI: 1.00–1.05), after correction for confounders. Although maternal cortisol levels were lower in overweight mothers and those with a history of asthma, maternal cortisol levels did not mediate the increased offspring wheezing. Pre-pregnancy BMI impacts on baby wheezing, which is not mediated by lower cortisol levels. As the prevalence of obesity in women of child-bearing age is increasing, further studies are needed to investigate modifiable maternal factors to avoid risk of wheezing in young children. [ABSTRACT FROM PUBLISHER]
- Published
- 2014
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17. On the surgical treatment of hypertrophic scars: a comprehensive guideline for the surgical treatment of hypertrophic scars.
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Stekelenburg, C. M., Van der Wal, M. B. A., Middelkoop, E., Niessen, F. B., and Van Zuijlen, P. P. M.
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BACKGROUND: Treating the hypertrophic scar remains a challenging problem. It often leaves the clinician with the questions whether, when and how to treat a hypertrophic scar. METHODS: This review will focus on the surgical treatment of hypertrophic scars considering the latest research in this field. RESULTS: We present a rough treatment guideline that offers guidance for choosing the most appropriate surgical technique possible for the treatment of scar hypertrophy. CONCLUSIONS: The presented guideline may help the clinician to get a better understanding of scar hypertrophy: whether and when to treat it surgically, and what treatment to use. [ABSTRACT FROM AUTHOR]
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- 2012
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18. Nurse-led interventions in heart failure care: Patient and nurse perspectives.
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Hoekstra T, Lesman-Leegte I, van der Wal M, Luttik ML, and Jaarsma T
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ATTITUDE (Psychology) ,CARDIAC output ,CARDIOVASCULAR disease nursing ,COMPUTER software ,DEMOGRAPHY ,HEALTH care teams ,HEALTH education ,HEART beat ,HEART failure ,HOME care services ,JOB satisfaction ,MEDICAL cooperation ,NURSES ,NURSES' attitudes ,NURSING ,PATIENT compliance ,PATIENT satisfaction ,PATIENTS ,RESEARCH ,STATISTICAL sampling ,SCALE analysis (Psychology) ,TELEMEDICINE ,DATA analysis ,SECONDARY analysis ,SEVERITY of illness index - Abstract
Abstract: Background: Perspectives of nurses and patients on the intensity and content of disease management programmes (DMPs) in heart failure are seldom addressed but are important in optimizing these programmes. Aim: To describe the perspectives of patients and nurses on delivered care in two DMPs. Methods: In total 442 patients (62% male; age 68±12years; LVEF 33%±14), assigned to the intervention groups of the Coordinating Study Evaluating Outcomes of Advising and Counselling in HF (COACH), and 32 registered nurses, completed questionnaires on satisfaction with the intensity and components of the DMPs. Results: In spite of large differences in intensity and components, patients were satisfied with the content of both DMPs. In patients (NYHA III–IV), treatment and educational goals were more often achieved in those who received intensive support, compared to patients who received basic support (85% vs. 70%). Patients and nurses perceived that most home visits were adding significant value to the HF care, while 12% of the home visits were perceived as unnecessary by the nurses. Conclusion: Patients and nurses did not perceive the intense DMP as an emotional and physical burden for themselves. Patients with severe HF might be in need of more support to achieve optimal treatment and educational goals. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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19. Relation of maternal hypertension with infant growth in a prospective birth cohort: the ABCD study.
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de Beer, M., Vrijkotte, T. G. M., van der Wal, M. F., van Weissenbruch, M. M., and Gemke, R. J. B. J.
- Abstract
The aim of this study was to investigate the assumed positive association of pre-existent and pregnancy-induced hypertension with the offspring’s weight and length gain in the first 14 months of life. We studied 3994 pregnant women and their offspring in a prospective community-based cohort study, starting between 2003 and 2004 (Amsterdam Born Children and their Development, ABCD study). Questionnaires obtaining information about hypertension during pregnancy were completed, and this was complemented with additional information from the obstetric caregiver. Anthropometry of the offspring was followed during the first 14 months of life. Main outcome measures were presence or absence of growth acceleration in weight or length (normal: ΔSDS ⩽ 0.67 v. growth acceleration: ΔSDS > 0.67). The relation between hypertension during pregnancy and weight and length gain was addressed by logistic regression analyses. We found that pre-existent hypertension was related to growth acceleration in weight and length. After correction for birth weight and pregnancy duration, the effect remained significant for growth acceleration in weight (OR 1.89; 95% CI 1.21–2.97; P < 0.01). Pregnancy-induced hypertension showed similar results, although correction for birth weight and pregnancy duration rendered the associations non-significant. In conclusion, infants of women with pre-existent hypertension during pregnancy more frequently have growth acceleration in weight and length, and yet the mechanisms acting on postnatal growth appear to be different. [ABSTRACT FROM PUBLISHER]
- Published
- 2010
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20. The effect of neighbourhood income and deprivation on pregnancy outcomes in Amsterdam, The Netherlands.
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Agyemang, C., Vrijkotte, T. G. M., Droomers, M., van der Wal, M. F., Bonsel, G. J., and Stronks, K.
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NEIGHBORHOODS ,DEPRIVATION (Psychology) ,PREGNANCY ,GESTATIONAL age ,UNEMPLOYMENT ,SOCIAL security - Abstract
Background: Studies suggest that the neighbourhoods in which people live influence their health. The main objective of this study was to investigate the associations of neighbourhood-level income and unemployment/social security benefit on pregnancy outcomes: preterm delivery, small for gestational age (SGA), pregnancy-induced hypertension (PIH) and miscarriage/perinatal death in Amsterdam. Methods: A random sample of 7883 from 82 neighbourhoods in Amsterdam. Individual-level data from the Amsterdam Born Children and their Development (ABCD) study were linked to data on neighbourhood-level factors. Multilevel logistic regression was used to estimate odds ratios and neighbourhood-level variance. Results: After adjustment for individual-level factors, women living in low-income neighbourhoods (third, second and first quartiles) were more likely than women living in high-income neighbourhoods (fourth quartile) to have SGA births: OR 1.32 (95% CI 1.04 to 1.68), 1.42 (1.11 to 1.82) and 1.62 (1.25 to 2.08) respectively. Women living in the quartile of neighbourhoods with the highest unemployment/social security benefit were more likely than those living in the quartile with the lowest unemployment/social security benefit to have SGA births 1.36 (1.08 to 1.72). The neighbourhood-level variance was significant only for SGA births. No significant associations were found between neighbourhood-level factors and other pregnancy outcomes. Conclusion: The findings suggest that neighbourhood income and deprivation are related to SGA births. More research is needed to explore possible mechanisms underlying poor neighbourhood environment and pregnancy outcomes, in particular through stress mechanisms. Such information might be necessary to help improve maternal and fetal health. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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21. Ethnic differences in preterm birth and its subtypes: the effect of a cumulative risk profile.
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Goedhart, G., van Eijsden, M., van der Wal, M. F., and Bonsel, G. J.
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PREGNANT women ,PREGNANCY ,MULTIPLE pregnancy ,GESTATIONAL age ,REGRESSION analysis ,ETHNIC groups - Abstract
Objective To explore the effect of potentially explanatory risk factors on ethnic differences in the prevalence of preterm birth (PTB) and its subtypes. Design Prospective population-based cohort study. Setting and population Pregnant women from Amsterdam attending their first antenatal visit for obstetric care. A total of 8266 women participated (response rate 67%). Ethnicity was based on the country of birth of the pregnant woman’s mother: the Netherlands, Surinam, the Antilles, Turkey, Morocco, Ghana and other non-Dutch countries. Exclusion criteria were multiple births and gestational age at delivery less than 24 weeks. Methods Risk factors were obtained using a multilingual questionnaire and from the Dutch Perinatal Registration. Risk factors were summed into a cumulative risk score. Multiple logistic regression analyses were performed. Main outcome measures Odds ratios with 95% CIs were calculated for total, spontaneous and iatrogenic (medically indicated) preterm births for the ethnic minority groups versus the Dutch reference group. Results After adjustment for all risk factors, the Surinamese (OR 1.6, 95% CI 1.2–2.4), Ghanaian (OR 2.0, 95% CI 1.1–3.6) and Antillean (OR 1.6, 95% CI 0.8–3.3) women had a higher risk of PTB compared with the Dutch women, in particular for iatrogenic preterm birth (OR 2.1, 95% CI 1.0–4.4; OR 3.2, 95% CI 1.0–10.4; OR 3.6, 95% CI 1.1–11.2, respectively). The ethnic minority groups had a higher cumulative risk score (ranging from 2.1 to 3.7) compared with the Dutch group (1.8). Adjustment for the cumulative risk score considerably decreased the risk of PTB among the Surinamese (OR 1.2, 95% CI 0.9–1.7), Ghanaian (OR 1.3, 95% CI 0.8–2.3) and Antillean (OR 1.2, 95% CI 0.6–2.4) women. Conclusions A cumulation of risk factors, mainly observed among the ethnic minority groups, contributes to the explanation of ethnic differences in PTB prevalence. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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22. Is psychosocial stress in first ongoing pregnancies associated with pre-eclampsia and gestational hypertension?
- Author
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Vollebregt, K. C., van der Wal, M. F., Wolf, H., Vrijkotte, T. G. M., Boer, K., and Bonsel, G. J.
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PREGNANCY complications ,PSYCHOLOGICAL stress ,PREECLAMPSIA ,HYPERTENSION ,OBSTETRICAL research - Abstract
Objective Investigating the association of pre-eclampsia and gestational hypertension with psychosocial stress in the first half of pregnancy. Design Prospective community-based cohort study. Setting Amsterdam, The Netherlands. Population Between January 2003 and March 2004, all pregnant Amsterdam women ( n = 12 377) were invited to fill in a questionnaire with sociodemographic and psychosocial variables (response rate 67%). Only nulliparous women with a singleton pregnancy, who completed the questionnaire before 24 weeks, and delivered after 24 weeks, were included. Methods A postpartum questionnaire was used to gather information on hypertension or proteinuria. If this questionnaire was not available, the national obstetric register was used for pregnancy outcome. Medical files were examined for women with hypertension and/or proteinuria to confirm the diagnosis of pre-eclampsia and gestational hypertension according to the International Society for the Study of Hypertension in Pregnancy guidelines. Psychosocial stress was defined as workstress (Work Experience and Appreciation Questionnaire partly based on the Job Content Instrument of Karasek et al.), anxiety (the State-Trait Anxiety Inventory), depression (Center for Epidemiological Studies Depression Scale) and pregnancy-related anxiety (PRAQ-R). The association of psychosocial stress with the incidence of pre-eclampsia and gestational hypertension was explored by multivariate analysis adjusted for sociodemographic and medical confounders. Main outcome measures Incidence of pre-eclampsia and gestational hypertension. Results A total of 3679 women were included. The incidence of pre-eclampsia and gestational hypertension was 3.5 and 4.4%, respectively. Workstress, anxiety, pregnancy-related anxiety or depression had no effect on the incidence of pre-eclampsia or gestational hypertension. Conclusion Psychosocial stress in the first half of pregnancy does not influence the incidence of pre-eclampsia and gestational hypertension in nulliparous women. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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23. Late start of antenatal care among ethnic minorities in a large cohort of pregnant women.
- Author
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Alderliesten, M. E., Vrijkotte, T. G. M., van der Wal, M. F., and Bonsel, G. J.
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PRENATAL care ,COHORT analysis ,MINORITIES ,HEALTH equity ,OBSTETRICAL research - Abstract
Objectives The objectives of this study were to investigate the difference in timing of the first antenatal visit between ethnic groups and to explore the contribution of several noneconomic risk factors. Design Prospective cohort study. Setting All independent midwifery practices in the city of Amsterdam and all six Amsterdam hospitals. Population Consecutive cohort of pregnant women ( n = 12 381). Ethnic groups were distinguished by country of birth. Methods Questionnaire data showed possible risk factors for late start. A Cox-proportional hazards model was created with (1) only ethnic group and (2) the addition of all significant risk factors, both time fixed and time dependent. Main outcome measures Gestational age at first visit. Results The questionnaire was returned by 8267 pregnant women (response rate 67%). All non-Dutch ethnic groups were significantly later in starting antenatal care during the whole duration of pregnancy compared with the ethnic Dutch group (hazard ratio [95% CI]: other Western, 0.83 [0.76–0.90]; Surinamese, 0.62 [0.56–0.68]; Antillean, 0.56 [0.45–0.70]; Turkish, 0.62 [0.55–0.69]; Moroccan, 0.56 [0.52–0.62]; Ghanaians, 0.50 [0.43–0.58] and other non-Western, 0.61 [0.56–0.67]). The range at which 90% were in care varied between 16 weeks and 3 days for Dutch and 24 weeks and 4 days for Ghanaians. These differences disappeared almost totally in the non-Dutch-speaking ethnic groups when the following risk factors were added to the model: poor language proficiency, low maternal education, teenage pregnancy, multiparity and unplanned pregnancy. The differences remained in the Dutch-speaking ethnic groups. Conclusions We observed a disturbing delay by all ethnic groups in the timing of their first antenatal visit. In women born in non-Dutch-speaking, non-Western countries, these differences were explained by a higher prevalence of the risk factors: poor language proficiency in Dutch, lower maternal education and more teenage pregnancies. In women born in Dutch-speaking, non-Western countries, the disparities cannot be explained by higher prevalence of these risk factors, indicating that cultural factors play a role. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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24. Ethnic differences in TSH but not in free T4 concentrations or TPO antibodies during pregnancy.
- Author
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Benhadi, N., Wiersinga, W. M., Reitsma, J. B., Vrijkotte, T. G. M., van der Wal, M. F., and Bonsel, G. J.
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THYROTROPIN ,IODIDE peroxidase ,PREGNANCY ,METALLOENZYMES ,ETHNIC groups - Abstract
Objective To describe the TSH, free T4 and thyroid peroxidase antibody (TPO-Ab) concentrations during pregnancy among four ethnic groups and to determine reference values for these parameters during normal pregnancy. Methods Cross-sectional study of a cohort of 3270 pregnant women living in the city of Amsterdam. Blood samples were drawn at first booking in the first or second trimester. TSH, free T4 and TPO-Ab concentrations were determined. Four ethnic groups were studied: Dutch, Surinam, Turkish and Moroccan. Results Plasma TSH increased and free T4 decreased from the first to the second trimester of pregnancy for all the ethnic groups. Ethnic differences were observed in TSH concentrations, with Dutch females having the highest TSH levels compared to the other three ethnic groups. The median TSH difference was 0·16 mU/l between the Dutch and Moroccan women, 0·15 mU/l between the Dutch and Surinam women and 0·10 mU/l between the Dutch and Turkish women. These could not be explained by differences in age, parity and current smoking status. No differences were seen in free T4 concentrations between the four ethnic groups. The prevalence of TPO-Ab was comparable across the ethnic groups (about 6% in each); the concentration of TPO-Ab was also comparable among the ethnic groups. The Dutch women had a higher lower-limit (2·5 percentile) of the TSH reference range than the Surinam, Turkish and Moroccan women, ranging from 0·14 mU/l for the Surinam and Moroccan to 0·27 mU/l for the Dutch women. Conclusion The increase in TSH and decrease in free T4 values during pregnancy correspond to previous reported studies. Pregnant Dutch women had consistently higher TSH values than the ethnic group, but corresponding free T4 levels and TPO-Ab did not differ between these ethnic groups. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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25. Folic acid knowledge and use in a multi-ethnic pregnancy cohort: the role of language proficiency.
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van Eijsden, M., van der Wal, M. F., and Bonsel, G. J.
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LANGUAGE & languages ,FOLIC acid ,GROUP identity ,PREGNANT women ,PREGNANCY - Abstract
Objective To investigate the role of language proficiency as determinant of folic acid knowledge and use in a multi-ethnic pregnancy cohort. Design Prospective cohort study. Setting and population Pregnant women from Amsterdam attending obstetric care for their first antenatal visit. Number approached: 12 373 women, response rate: 67% (8266 women aged 14–49 years). Ethnicity was based on the country of birth: the Netherlands, Surinam, Antilles, Turkey, Morocco, Ghana, other non-Western and other Western countries. Main outcome measures Knowledge about and use of folic acid supplements in pregnancy as elicited in a multilingual questionnaire, as well as determinants of these in ethnic groups separately. Results Both periconceptional folic acid use and knowledge were significantly lower among Ghanaian, Moroccan, Turkish, and other non-Western women than among women born in the Netherlands or other Western countries. Language proficiency in Dutch was a major determinant of knowledge in all the ethnic groups with a mother tongue other than Dutch [adjusted odds ratios (OR): Western 3.2, non-Western (all countries combined) 7.5], while educational attainment was of secondary importance. Knowledge in turn was the strongest determinant of use (adjusted OR: Western 17.4, non-Western 27.0). Conclusions Periconceptional folic acid supplement use among women born in non-Dutch-speaking non-Western countries is low, reflecting a lack of knowledge that is determined by the inability to speak and understand the language of the country of residence. Measures to tackle this problem include the provision of linguistically appropriate information via ethnic health advisors, and language courses integrating health education for immigrants. [ABSTRACT FROM AUTHOR]
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- 2006
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26. Neck/Shoulder, Low Back, and Arm Pain in Relation to Computer Use, Physical Activity, Stress, and Depression Among Dutch Adolescents.
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Diepenmaat, A. C. M., Van Der Wal, M. F., De Vet, H. C. W., and Hirasing, R. A.
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- 2006
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27. The prevalence of encopresis in a multicultural population.
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van der Wal, M F, Benninga, M A, and Hirasing, R A
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- 2005
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28. Vaccination rates in a multicultural population.
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van der Wal, M. F., Diepenmaat, A. C. M., Pel, J. M., and Hirasing, R. A.
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VACCINATION ,IMMUNIZATION of children ,IMMUNIZATION ,CHILD care - Abstract
Aims: To establish whether there are social or cultural groups of children in Amsterdam with relatively low vaccination coverage for diphtheria, pertussis, tetanus, and poliomyelitis (DPTP), and for measles, mumps, and rubella (MMR). Methods: All of the 57 382 children aged between 5 and 12 years and living in Amsterdam on 1 January 2003 were analysed with respect to vaccination and sociodemogrophic data collected routinely by the Department of Child Health Care. The State Vaccination Programme (SVP) guidelines were adhered to in order to determine vaccination status. Results: The overall respective DPTP and MMR vaccination rates were 93.0% and 93.9%. No great differences in vaccination levels were found between depressed and affluent areas or between the children of Dutch and non-Dutch mothers. However, foreign children who had been born abroad (Surinam, Morocco, Turkey) were most likely not to have been fully vaccinated. Children who attended anthroposophical schools were also found to be considerably less frequently fully immunised than those at other types of schools. Conclusions: Vaccination coverage for children domiciled in Amsterdam was very high. Nevertheless, there are groups where the vaccination level is relatively low and social contact is high. [ABSTRACT FROM AUTHOR]
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- 2005
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29. Rotavirusinfectie.
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van den Berg, H., de Jong-van der Wal, M. A., and Beeldman-Brinkman, C. C. C.
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- 2009
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30. Circumstances of dying in hospitalized children.
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van der Wal, M. E., Renfurm, L. N., van Vught, A. J., Gemke, R. J. B. J., and Gemke, R J
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DEATH ,BRAIN death ,TERMINALLY ill children ,MEDICAL care - Abstract
Unlabelled: Conditions of dying in a tertiary children's hospital were assessed in a retrospective cohort study. Non-survivors, excluding newborns and emergency room patients, were allocated to four groups: brain death (BD), failed cardiopulmonary resuscitation (failed CPR), death following a do-not-resuscitate (DNR) order and death following withholding or withdrawal of therapy (W/W). In a 4-year period 190 (1.3%) of 14,903 admitted patients died. Of these 134 (71%) died on the paediatric intensive care unit, 42 (22%) on the ward and 14 (7%) in the operating room. W/W was found in 75 (39%), failed CPR in 57 (30%), BD in 32 (17%), and death following a DNR order in 26 (14%). Justifications for restrictions of treatment (W/W or DNR) were imminent death in 41 (41%), lack of future relational potential in 13 (13%) and excessive burden of disease in 47 (47%). In non-survivors analgesics and sedatives were frequently used to relieve suffering in the terminal phase. General principles for the approach of terminally ill children in whom death may become an option instead of a fate are discussed.Conclusion: In the majority of children dying in hospital, death occurred following restrictions of life-sustaining treatment, comprising do-not-resuscitate or other forms of withholding or withdrawal of therapy. [ABSTRACT FROM AUTHOR]- Published
- 1999
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31. Mothers' reports of infant crying and soothing in a multicultural population.
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van der Wal MF, van den Boom DC, Pauw-Plomp H, de Jonge GA, van der Wal, M F, van den Boom, D C, Pauw-Plomp, H, and de Jonge, G A
- Abstract
Objectives: To investigate the prevalence of infant crying and maternal soothing techniques in relation to ethnic origin and other sociodemographic variables.Design: A questionnaire survey among mothers of 2-3 month old infants registered at six child health clinics in Amsterdam, the Netherlands.Subjects: A questionnaire on sociodemographic characteristics and crying behaviour was completed for 1826 of 2180 (84%) infants invited with their parents to visit the child health clinics. A questionnaire on soothing techniques was also filled out at home for 1142 (63%) of these infants.Results: Overall prevalences of "crying for three or more hours/24 hour day" "crying a lot", and "difficult to comfort" were 7.6%, 14.0%, and 10.3%, respectively. Problematic infant crying was reported by 20.3% of the mothers. Of these infants, only 14% met all three inclusion criteria. Problematic crying occurred less frequently among girls, second and later born children, Surinamese infants, and breast fed infants. Many mothers used soothing techniques that could affect their infant's health negatively. Shaking, slapping, and putting the baby to sleep in a prone position were more common among non-Dutch (especially Turkish) mothers than among Dutch mothers. Poorly educated mothers slapped their baby more often than highly educated mothers.Conclusions: Mothers' reports of infant crying and soothing varied sociodemographically. Much harm may be prevented by counselling parents (especially immigrants) on how and how not to respond to infant crying. Health education should start before the child's birth, because certain soothing techniques could be fatal, even when practised for the first time. [ABSTRACT FROM AUTHOR]- Published
- 1998
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32. Mothers' reports of infant crying and soothing in a multicultural population.
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Van Der Wal, M. F., Van Den Boom, D. C., Pauw-Plomp, H., and De Jonge, G. A.
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- 1998
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33. Trigeminocardiac reflexes: maxillary and mandibular variants of the oculocardiac reflex.
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Lang, Scott, Lanigan, Dennis, Wal, Mike, Lang, S, Lanigan, D T, and van der Wal, M
- Abstract
Copyright of Canadian Journal of Anaesthesia / Journal Canadien d'Anesthésie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 1991
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34. Mededelingen.
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van der Wal, M. J.
- Published
- 1995
35. 197 Quality of life and depression are related in heart failure patients
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Lesman, I., Jaarsma, T., Van der Wal, M., and van Veldhuisen, D.J.
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MENTAL depression ,HEART failure - Abstract
An abstract of the study "Quality of life and depression are related in heart failure patients," by I. Lesman and colleagues, is presented.
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- 2004
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36. Het Nederlands van Michiel de Ruyter, morfologie, woordvorming en syntaxis.
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VAN DER WAL, M. J.
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- 2002
37. Studies over de Rijmbijbel.
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van der Wal, M. J.
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- 2000
38. A clinimetric overview of scar assessment scales.
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van der Wal, M B A, Verhaegen, P D H M, Middelkoop, E, and van Zuijlen, P P M
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- 2012
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39. 364 Development and testing of the Dutch Heart Failure Knowledge scale
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Van der Wal, M. and Jaarsma, T.
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HEART failure ,PATIENT education - Abstract
An abstract of the article "Development and Testing of the Dutch Heart Failure Knowledge Scale," by M. VanderWal and T. Jaarsma, is presented.
- Published
- 2004
40. Sedigh Leven, Daghelycks Broodt (1639).
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van der Wal, M. J.
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- 2000
41. Death from the oculocardiac reflex.
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Lang, Scott, Wal, Michael, Lang, S A, and Van der Wal, M
- Published
- 1994
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