| Literature DB >> 14474340 |
Abstract
Entities:
Keywords: ELECTROCARDIOGRAPHY/in infancy and childhood; HEART DISEASES/in infancy and childhood; HEART SOUNDS/in infancy and childhood; INFANT, NEWBORN/diseases; POLYCYTHEMIA/in infancy and childhood; TWINS/diseases
Mesh:
Year: 1962 PMID: 14474340
Source DB: PubMed Journal: Biol Neonat ISSN: 0523-6525