Progressive retrograde amnesia in concussed football players: observation shortly postimpact.
D000328:Adult; D000647:Amnesia / Q000209:etiology*; D001265:Athletic Injuries / Q000150:complications*; D001924:Brain Concussion / Q000150:complications*; D006801:Humans; D008297:Male; D010468:Perceptual Disorders / Q000209:etiology; D013177:Sports; D013997:Time Factors