title: Current status of valve replacement.
mesh_terms: D001021:Aortic Valve / Q000601:surgery*; D006350:Heart Valve Prosthesis / Q000401:mortality*; D006351:Heart Valves / Q000637:transplantation; D006801:Humans; D008943:Mitral Valve / Q000601:surgery*; D011379:Prognosis