title: A Bjork-Shiley valve 40 years in action.
authors.affiliation: Division of Cardiothoracic Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA. halmassi@mcw.edu
authors.forename: G Hossein
authors.initials: GH
authors.lastname: Almassi
mesh_terms: D000369:Aged, 80 and over; D006349:Heart Valve Diseases / Q000601:surgery*; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000601:surgery; D013997:Time Factors