title: Grading severity of mitral regurgitation by echocardiography: science or art?
authors.forename: Paul A
authors.initials: PA
authors.lastname: Grayburn
authors.forename: Paul
authors.initials: P
authors.lastname: Bhella
mesh_terms: D018618:Echocardiography, Doppler, Color; D006439:Hemodynamics; D006801:Humans; D008943:Mitral Valve / Q000000981:diagnostic imaging* / Q000503:physiopathology; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D009200:Myocardial Contraction; D015588:Observer Variation; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D012720:Severity of Illness Index