title: The ball valve experience over three decades.
authors.affiliation: Heart Institute, St. Vincent Hospital and Medical Center, Portland, Oregon.
authors.forename: J S
authors.initials: JS
authors.lastname: Swanson
authors.forename: A
authors.initials: A
authors.lastname: Starr
mesh_terms: D000818:Animals; D006350:Heart Valve Prosthesis / Q000009:adverse effects / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D011474:Prosthesis Design; D013927:Thrombosis / Q000453:epidemiology / Q000517:prevention & control