title: Clinical and angiographic features of Beall-valve-disc variance.
mesh_terms: D000328:Adult; D001344:Autopsy; D004562:Electrocardiography; D004912:Erythrocytes; D005260:Female; D006337:Heart Murmurs; D006339:Heart Rate; D006350:Heart Valve Prosthesis / Q000592:standards*; D006439:Hemodynamics; D006801:Humans; D008943:Mitral Valve / Q000473:pathology; D008944:Mitral Valve Insufficiency / Q000601:surgery*; D013312:Stress, Physiological