title: Cardiac Valve Replacement.
mesh_terms: D000368:Aged; D001705:Bioprosthesis / Q000379:methods; D006350:Heart Valve Prosthesis / Q000379:methods* / Q000401:mortality; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology; D011379:Prognosis