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This article investigates how firms' addressing of the challenges from the market and non-market conditions in China's mid-range economy would affect firms' innovation performance. Based on the multiple informant data from 303 firms in China, we find that formal institutional capital/informal institutional capital has an increasingly positive/inverted U-shaped effect on innovation performance. Exploratory market learning strengthens the formal institutional capital/informal institutional capital-innovation performance relations, while exploitative market learning weaken the inverted U-shaped effects informal institutional capital has on innovation performance. [ABSTRACT FROM AUTHOR]

Objective: The current study aimed to retrospectively assess the cancer detection rate of needle localization biopsy of breast microcalcifications undetectable on sonography. Materials and Methods: Patients who underwent mammography-guided needle localization biopsy of breast microcalcifications undetectable on sonography from January 2005 to December 2017 were included in the study. Patients with incomplete medical records were excluded from the study. Patient mammograms were categorized using the Breast Imaging-Reporting and Data System (BI-RADS) assessment criteria. The percentages of benign and malignant lesions were determined by pathological examination of surgically recovered specimens. Correlation between preoperative imaging assessment and final diagnosis was investigated, and the complications associated with the procedures were recorded. Results: A total of 301 needle-localized biopsies were performed under mammographic guidance. The mean age of the patients was 58.18 ± 7.73 years. The overall ductal carcinoma in situ (DCIS) and cancer detection rate was 23.3%. The proportion of patients with BI-RADS 0 category and undergoing second mammography was higher in the DCIS and cancer group. A total of 227 patients did not undergo second mammography. Of these patients, 70 demonstrated BI-RADS 4 category, 34 were diagnosed with DCIS, and 5 were diagnosed with breast cancer during subsequent follow-up. Conclusion: Needle-localized excision of microcalcifications undetectable on sonography has high detection rate for early stage of breast cancer with low risk of associated complications. Regular mammography is a satisfactory follow-up tool for female patients with microcalcifications in the breasts. Additional studies should be performed to compare between needle-localized excision and vacuum-assisted breast biopsy. [ABSTRACT FROM AUTHOR]