1. Department of Cardiology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts
2. Department of Pediatrics, Harvard Medical School, Boston, Massachusetts
3. Department of Anesthesiology, Preoperative and Pain Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts
4. Department of Pediatrics, Hasbro Children’s Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
5. Department of Critical Care Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts
6. Department of Mathematics and Statistics, Boston University, Harvard Clinical Research Institute, Boston, Massachusetts
7. Division of Hematology/Oncology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts
8. Department of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, Massachusetts