title: Differential diagnosis of congenital heart disease in the first 3 months of life. Significance of superior (left) QRS axis.
mesh_terms: D003937:Diagnosis, Differential; D004562:Electrocardiography; D006330:Heart Defects, Congenital / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006345:Heart Septal Defects, Ventricular / Q000175:diagnosis; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011664:Pulmonary Valve / Q000002:abnormalities; D011859:Radiography; D014188:Transposition of Great Vessels / Q000175:diagnosis; D014261:Tricuspid Valve / Q000002:abnormalities