title: 50th anniversary historical article. Valvular heart disease.
authors.affiliation: Division of Cardiology, Northwestern University Medical School, Chicago, Illinois 60611, USA.
authors.forename: R O
authors.initials: RO
authors.lastname: Bonow
mesh_terms: D001021:Aortic Valve; D002309:Cardiology / Q000266:history; D006349:Heart Valve Diseases / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D008943:Mitral Valve