title: Combination of mechanical and bioprosthetic valves in aortic and mitral valve replacement.
authors: W G
authors: WG
authors: Rainer
mesh_terms: D001021:Aortic Valve / Q000601:surgery*; D001705:Bioprosthesis; D006350:Heart Valve Prosthesis; D006801:Humans; D008943:Mitral Valve / Q000601:surgery*