Early experience with Björk-Shiley tilting disc prosthesis.
D001021:Aortic Valve; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis / Q000401:mortality; D006801:Humans; D008943:Mitral Valve; D011183:Postoperative Complications / Q000453:epidemiology; D014261:Tricuspid Valve