title: Endocardial fibroelastosis with congenital complete heart block in identical twins.
mesh_terms: D001919:Bradycardia / Q000151:congenital / Q000628:therapy; D006332:Cardiomegaly / Q000151:congenital; D004200:Diseases in Twins; D004695:Endocardial Fibroelastosis / Q000150:complications / Q000151:congenital* / Q000235:genetics; D005260:Female; D006327:Heart Block / Q000150:complications / Q000151:congenital* / Q000235:genetics; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D010138:Pacemaker, Artificial; D011247:Pregnancy; D014427:Twins; D014430:Twins, Monozygotic