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Publisher
- elsevier science15
- american public health association4
- elsevier3
- american academy of family physicians2
- american academy of general practice2
- american medical assn2
- u.s. dept. of health and human services, centers for disease control and prevention, national center for chronic disease prevention and health promotion2
- bmj pub1
- elsevier inc. on behalf of the american journal of preventive medicine board of governors1