title: Comparison of three devices to replace the aortic valve.
mesh_terms: D000328:Adult; D001021:Aortic Valve / Q000601:surgery* / Q000637:transplantation; D001022:Aortic Valve Insufficiency / Q000209:etiology / Q000601:surgery*; D001024:Aortic Valve Stenosis / Q000601:surgery*; D001777:Blood Coagulation; D005500:Follow-Up Studies; D006326:Heart Auscultation; D006350:Heart Valve Prosthesis / Q000295:instrumentation* / Q000401:mortality; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications; D013923:Thromboembolism / Q000453:epidemiology / Q000209:etiology; D014184:Transplantation, Homologous