title: A novel approach to calculation of mean atrial valve gradient by Doppler echocardiography.
authors.forename: Sing San
authors.initials: SS
authors.lastname: Yang
mesh_terms: D001281:Atrial Fibrillation / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000503:physiopathology; D015982:Bias; D001783:Blood Flow Velocity / Q000502:physiology; D015150:Echocardiography, Doppler; D006801:Humans; D008432:Mathematical Computing; D008943:Mitral Valve / Q000000981:diagnostic imaging* / Q000503:physiopathology; D008946:Mitral Valve Stenosis / Q000000981:diagnostic imaging* / Q000453:epidemiology / Q000503:physiopathology