title: Calcification of porcine bioprosthetic heart valves. A microradiographic investigation in 103 long-term explants.
mesh_terms: D001705:Bioprosthesis; D002114:Calcinosis / Q000000981:diagnostic imaging*; D006350:Heart Valve Prosthesis; D006801:Humans; D008852:Microradiography; D011475:Prosthesis Failure