[Leftward shift of the P wave axis and its diagnostic significance in sinus venous defect and the persistence of the left superior vena cava].
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D008297:Male; D014683:Vena Cava, Superior / Q000002:abnormalities*