title: Invited commentary.
authors.forename: Robert  W M
authors.initials: R
authors.lastname: Frater
mesh_terms: D004108:Dilatation, Pathologic / Q000150:complications; D006801:Humans; D008943:Mitral Valve / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D008944:Mitral Valve Insufficiency / Q000209:etiology* / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D013318:Stroke Volume / Q000502:physiology; D018487:Ventricular Dysfunction, Left / Q000473:pathology* / Q000503:physiopathology