Boxing.
D000647:Amnesia / Q000209:etiology; D001265:Athletic Injuries; D001914:Boxing; D001930:Brain Injuries / Q000209:etiology; D006259:Craniocerebral Trauma / Q000209:etiology; D004569:Electroencephalography; D006801:Humans; D009422:Nervous System Diseases / Q000209:etiology