Affiliation: | a Division of Pediatric Cardiology, Duke University Medical Center, Durham, North Carolina b Division of Cardiothoracic Surgery, Duke University Medical Center, Durham, North Carolina c Division of Cardiology in the Departments of Pediatrics, Surgery, and Medicine, Duke University Medical Center, Durham, North Carolina d Duke Clinical Research Institute, Durham, North Carolina e Child Health Corporation of America, Shawnee Mission, Kansas, Florida f Division of Thoracic and Cardiovascular Surgery, The Congenital Heart Institute of Florida, All Children's Hospital and Children's Hospital of Tampa, University of South Florida College of Medicine, St. Petersburg and Tampa, Florida g Department of Pediatric and Congenital Heart Surgery, Cleveland Clinic, Cleveland, Ohio h Division of Infectious Disease, Department of Pediatrics, and Center for Clinical Epidemiology and Biostatistics, The Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania |