Affiliation: | a Division of Cardiothoracic Surgery, the Cardiac Center, the Children's Hospital of Philadelphia, Philadelphia, Pa c Division of Gastroenterology, Hepatology and Nutrition, the Cardiac Center, the Children's Hospital of Philadelphia, Philadelphia, Pa d Division of Psychology, the Cardiac Center, the Children's Hospital of Philadelphia, Philadelphia, Pa e Division of Genetics, the Cardiac Center, the Children's Hospital of Philadelphia, Philadelphia, Pa f Division of Pediatrics, the Cardiac Center, the Children's Hospital of Philadelphia, Philadelphia, Pa g Division of Neurology, the Cardiac Center, the Children's Hospital of Philadelphia, Philadelphia, Pa b Division of Biostatistics and Epidemiology and the Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio |