Bicycle helmet promotion. Prototype for physician activism in injury prevention.
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D000293:Adolescent; D001642:Bicycling / Q000293:injuries*; D002170:Canada / Q000453:epidemiology; D002648:Child; D003256:Community Participation; D006260:Head Protective Devices; D006293:Health Promotion / Q000331:legislation & jurisprudence; D006801:Humans; D010819:Physician's Role; D014947:Wounds and Injuries / Q000453:epidemiology / Q000517:prevention & control