title: Invited Commentary.
authors.affiliation: Department of Surgery, Duke University Medical Center, Box 3851, Durham, NC 27710. Electronic address: glowe001@mc.duke.edu.
authors.forename: Donald
authors.initials: D
authors.lastname: Glower
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000601:surgery*; D008944:Mitral Valve Insufficiency / Q000601:surgery*; D008946:Mitral Valve Stenosis / Q000601:surgery*