The impact of head trauma on society.
D000063:Accidents, Traffic / Q000517:prevention & control*; D000293:Adolescent; D000328:Adult; D000435:Alcoholic Intoxication; D001914:Boxing; D001930:Brain Injuries / Q000453:epidemiology* / Q000517:prevention & control; D002170:Canada; D002648:Child; D006260:Head Protective Devices; D006801:Humans; D011482:Protective Devices; D012940:Social Problems; D014481:United States