title: [Problems of replacing heart valves with bioprosthesis using the xenopericardium].
mesh_terms: D000293:Adolescent; D000328:Adult; D000818:Animals; D001021:Aortic Valve / Q000601:surgery*; D001022:Aortic Valve Insufficiency / Q000601:surgery; D001705:Bioprosthesis; D002417:Cattle; D002648:Child; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis; D006801:Humans; D008722:Methods; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery*; D008944:Mitral Valve Insufficiency / Q000601:surgery; D010496:Pericardium / Q000637:transplantation*
vernacular_title: Problemy zameshcheniia klapanov serdtsa bioprotezami iz ksenoperikarda.