The development of the Björk-Shiley artificial heart valve.
D001021:Aortic Valve / Q000601:surgery*; D006350:Heart Valve Prosthesis / Q000266:history* / Q000295:instrumentation; D049673:History, 20th Century; D006801:Humans; D008943:Mitral Valve / Q000601:surgery; D011474:Prosthesis Design; D013548:Sweden