[STUDIES ON ELECTROCARDIOGRAPHY IN CHILDREN. II. ON ELECTROCARDIOGRAPHIC CHANGES WITH AGE. 2. INTRINSIC DEFLECTION, MEASUREMENT OF HEART ENLARGEMENT, ST SEGMENTS, T WAVE, AND QT INTERVAL].
D000293:Adolescent; D000375:Aging; D001145:Arrhythmias, Cardiac; D053840:Brugada Syndrome; D000075224:Cardiac Conduction System Disease; D006332:Cardiomegaly; D002648:Child; D004562:Electrocardiography; D006329:Heart Conduction System; D006801:Humans; D007223:Infant; D007231:Infant, Newborn
ADOLESCENCE; AGING; CHILD; ELECTROCARDIOGRAPHY; HEART ENLARGEMENT; INFANT; INFANT, NEWBORN