Boxing.
D000328:Adult; D001265:Athletic Injuries / Q000000981:diagnostic imaging / Q000453:epidemiology*; D001914:Boxing; D001921:Brain / Q000000981:diagnostic imaging; D006801:Humans; D007883:Legislation, Medical; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D014481:United States