[Incidence and distribution of valvular diseases in the aged--clinical observations on 206 cases of persons over 60 years of age. (I)].
D000368:Aged; D005260:Female; D006349:Heart Valve Diseases / Q000175:diagnosis / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010701:Phonocardiography