Why child cyclists should wear helmets.
D000063:Accidents, Traffic; D001265:Athletic Injuries / Q000517:prevention & control*; D001642:Bicycling; D002648:Child; D006259:Craniocerebral Trauma / Q000517:prevention & control*; D006260:Head Protective Devices; D006801:Humans; D011482:Protective Devices; D013177:Sports; D014852:Wales