Cycle helmets and the law.
Evans
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D000063:Accidents, Traffic / Q000401:mortality; D001642:Bicycling / Q000293:injuries / Q000331:legislation & jurisprudence*; D006259:Craniocerebral Trauma / Q000401:mortality / Q000517:prevention & control; D006260:Head Protective Devices; D006291:Health Policy; D006801:Humans; D006113:United Kingdom