title: [Porcine valvular bioprostheses: do the long-term results justify their use?].
mesh_terms: D001021:Aortic Valve / Q000601:surgery; D001705:Bioprosthesis; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis; D006801:Humans; D008943:Mitral Valve / Q000601:surgery
vernacular_title: Bioprotesi valvolari porcine: i risultati a distanza ne giustificano l'impiego?