[Heart valve replacement with bioprosthesis. (4) Clinical study of aortic valve replacement].
D000818:Animals; D001021:Aortic Valve / Q000601:surgery*; D006350:Heart Valve Prosthesis; D006801:Humans; D010496:Pericardium / Q000637:transplantation*; D013552:Swine; D014183:Transplantation, Heterologous