THE ELECTROCARDIOGRAM, VENTRICULAR GRADIENT AND SPATIAL VECTORCARDIOGRAM DURING THE FIRST WEEK OF LIFE.
D004562:Electrocardiography; D006352:Heart Ventricles; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D014672:Vectorcardiography
ELECTROCARDIOGRAPHY; INFANT, NEWBORN; VECTORCARDIOGRAPHY