Statement in support of motorcycle helmet laws.
D001930:Brain Injuries / Q000453:epidemiology / Q000517:prevention & control*; D006260:Head Protective Devices; D006801:Humans; D009049:Motorcycles / Q000331:legislation & jurisprudence*; D012955:Societies, Medical; D014194:Traumatology; D014481:United States / Q000453:epidemiology