[Left branch block in premature infants. (Presentation of 3 cases)].
D001238:Asphyxia Neonatorum; D002037:Bundle-Branch Block; D000075224:Cardiac Conduction System Disease; D006327:Heart Block; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007235:Infant, Premature, Diseases
ASPHYXIA NEONATORUM; BUNDLE-BRANCH BLOCK; INFANT, PREMATURE, DISEASES