[Surgical treatment of acquired aortic valvular disease--statistical observations and problems].
D000293:Adolescent; D000328:Adult; D001022:Aortic Valve Insufficiency / Q000453:epidemiology / Q000601:surgery*; D002648:Child; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged