The electrocardiograms of premature infants in the first month of life. II. Unipolar chest and limb leads.
D002648:Child; D004562:Electrocardiography; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature / Q000502:physiology*; D019369:Life; D013909:Thorax
ELECTROCARDIOGRAPHY/in infancy and childhood; INFANT, PREMATURE/physiology