title: History and design of artificial heart valves.
mesh_terms: D001021:Aortic Valve; D001705:Bioprosthesis; D006349:Heart Valve Diseases / Q000601:surgery*; D006350:Heart Valve Prosthesis / Q000266:history; D049673:History, 20th Century; D006801:Humans; D008943:Mitral Valve; D011474:Prosthesis Design