Influence of road speed restrictions on the incidence and severity of head injuries.
D000063:Accidents, Traffic; D001334:Automobile Driving; D006259:Craniocerebral Trauma / Q000175:diagnosis / Q000453:epidemiology* / Q000401:mortality; D006760:Hospitalization; D006801:Humans; D007878:Legislation as Topic; D011379:Prognosis; D013019:South Africa; D014947:Wounds and Injuries / Q000453:epidemiology