title: Echocardiographic studies in mitral regurgitation--proposal of a new specific sign.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003971:Diastole; D004452:Echocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000175:diagnosis*; D008946:Mitral Valve Stenosis / Q000175:diagnosis; D012214:Rheumatic Heart Disease / Q000175:diagnosis; D013599:Systole