title: Helmets and preventing motorcycle and bicycle injuries: comments and a correction.
authors.forename: P L
authors.initials: PL
authors.lastname: Graitcer
mesh_terms: D001642:Bicycling / Q000331:legislation & jurisprudence; D003257:Consumer Product Safety; D006260:Head Protective Devices / Q000592:standards*; D006801:Humans; D009049:Motorcycles / Q000331:legislation & jurisprudence; D014481:United States