Bicycle helmets: it's the law.
Fisher
N L
NL
Rhode Island Unintentional Injury Prevention Program, Rhode Island Department of Health, USA.
D001642:Bicycling / Q000293:injuries* / Q000331:legislation & jurisprudence*; D002648:Child; D006259:Craniocerebral Trauma / Q000517:prevention & control*; D006260:Head Protective Devices; D006801:Humans; D012237:Rhode Island