[Clinical experience using Björk-Shiley valve grafts].
D000293:Adolescent; D000328:Adult; D001021:Aortic Valve; D001022:Aortic Valve Insufficiency / Q000000981:diagnostic imaging / Q000601:surgery; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D011859:Radiography