Aortic and mitral valve replacement with two different disc prostheses. A randomized and comparative study.
D001021:Aortic Valve / Q000601:surgery*; D006350:Heart Valve Prosthesis / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D008943:Mitral Valve / Q000601:surgery*