Letter: Brain damage in sport.
D001265:Athletic Injuries / Q000150:complications / Q000453:epidemiology*; D001924:Brain Concussion / Q000453:epidemiology* / Q000209:etiology; D006259:Craniocerebral Trauma / Q000150:complications / Q000453:epidemiology*; D004739:England; D006801:Humans; D008297:Male