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Publisher
- bmj publishing group14
- centers for disease control & prevention (cdc)8
- lippincott williams & wilkins6
- national center for chronic disease prevention & health promotion6
- u.s. dept. of health and human services, centers for disease control and prevention, national center for chronic disease prevention and health promotion5
- u.s. centers for disease control4
- u.s. government printing office4
- bmj pub. group3
- wiley-blackwell3