title: Discussion.
mesh_terms: D001014:Aortic Aneurysm / Q000601:surgery*; D001021:Aortic Valve / Q000637:transplantation*; D001705:Bioprosthesis; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000295:instrumentation*; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000295:instrumentation*; D006801:Humans