North Carolina high school football injury study: equipment and prevention.
D001265:Athletic Injuries / Q000517:prevention & control*; D005538:Football; D006260:Head Protective Devices / Q000592:standards; D006801:Humans; D008297:Male; D009657:North Carolina; D006109:Poaceae; D011482:Protective Devices / Q000592:standards*; D012574:Schools; D012775:Shoes / Q000592:standards