Mitral valve prolapse-click syndrome in twins.
D000328:Adult; D000368:Aged; D004200:Diseases in Twins; D004452:Echocardiography; D005260:Female; D006801:Humans; D008297:Male; D008944:Mitral Valve Insufficiency / Q000175:diagnosis / Q000235:genetics*; D011391:Prolapse / Q000175:diagnosis / Q000235:genetics; D013577:Syndrome