[Syndrome of prolonged Q-T interval (report of 4 cases in 2 families)].
D000328:Adult; D002648:Child; D004562:Electrocardiography; D006331:Heart Diseases / Q000188:drug therapy / Q000209:etiology / Q000235:genetics*; D006801:Humans; D008297:Male; D013564:Sympathetic Nervous System / Q000503:physiopathology; D013577:Syndrome