title: Long-term follow-up of patients with porcine cardiac valve prostheses.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001705:Bioprosthesis / Q000009:adverse effects*; D004868:Equipment Failure; D005260:Female; D005500:Follow-Up Studies; D006349:Heart Valve Diseases / Q000150:complications / Q000601:surgery*; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013923:Thromboembolism / Q000209:etiology