title: Natural history of the porcine bioprosthetic heart valve.
mesh_terms: D000328:Adult; D001705:Bioprosthesis / Q000009:adverse effects*; D005260:Female; D005500:Follow-Up Studies; D006349:Heart Valve Diseases / Q000401:mortality; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male