The evolution of the vectorcardiogram and electrocardiogram of the normal infant. I. The normal newborn.
D002648:Child; D004562:Electrocardiography; D006801:Humans; D007223:Infant; D007231:Infant, Newborn / Q000502:physiology; D014672:Vectorcardiography
ELECTROCARDIOGRAPHY/in infancy and childhood; INFANT, NEWBORN/physiology; VECTORCARDIOGRAPHY/in infancy and childhood