title: Detection of atrioventricular disc valve malfunction by two-dimensional echocardiography.
mesh_terms: D000328:Adult; D000368:Aged; D004452:Echocardiography; D004868:Equipment Failure; D005069:Evaluation Studies as Topic; D005260:Female; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged