[STUDIES ON ELECTROCARDIOGRAMS (QRS WAVES) IN VARIOUS TYPES OF SEPTAL HEART DAMAGE].
D000293:Adolescent; D002648:Child; D004562:Electrocardiography; D006325:Heart Atria; D006343:Heart Septal Defects; D006344:Heart Septal Defects, Atrial; D006345:Heart Septal Defects, Ventricular; D006801:Humans; D007223:Infant
ADOLESCENCE; CHILD; ELECTROCARDIOGRAPHY; HEART SEPTAL DEFECTS, ATRIAL; HEART SEPTAL DEFECTS, VENTRICULAR; INFANT