title: Surgical closure of ventricular septal defect during the first twelve months of life.
mesh_terms: D002648:Child; D002675:Child, Preschool; D006330:Heart Defects, Congenital / Q000150:complications; D006333:Heart Failure / Q000150:complications / Q000601:surgery*; D006345:Heart Septal Defects, Ventricular / Q000150:complications / Q000401:mortality / Q000601:surgery*; D006801:Humans; D007223:Infant; D011183:Postoperative Complications; D011652:Pulmonary Circulation; D014655:Vascular Resistance