title: The case for universal motorcycle helmet laws.
authors.forename: David J
authors.initials: DJ
authors.lastname: Houston
mesh_terms: D000063:Accidents, Traffic / Q000401:mortality* / Q000517:prevention & control*; D017677:Age Distribution; D006260:Head Protective Devices / Q000592:standards* / Q000706:statistics & numerical data; D006801:Humans; D009049:Motorcycles / Q000331:legislation & jurisprudence*; D014481:United States / Q000453:epidemiology