Chronic postoperative heart block in children.
D000293:Adolescent; D006328:Cardiac Catheterization; D006348:Cardiac Surgical Procedures / Q000009:adverse effects; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006327:Heart Block / Q000209:etiology / Q000628:therapy*; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial