1. Department of Pediatrics (E.L.G., J.W., S.R., C.A., W.K.C.), Columbia University Irving Medical Center, New York, NY.
2. Nemours Cardiac Center, Nemours Children’s Hospital, Wilmington, DE (S.N.N).
3. Division of Newborn Medicine, Department of Medicine (S.U.M.), Boston Children’s Hospital, Boston, MA.
4. Department of Pediatrics (S.U.M., J.W.N.), Harvard Medical School, Boston, MA.
5. Mindich Child Health & Development Institute (N.P., B.D.G.), Icahn School of Medicine at Mount Sinai, New York, NY.
6. Department of Pathology and Cell Biology (V.J.), Columbia University Irving Medical Center, New York, NY.
7. Division of Cardiology (S.M.K), Columbia University Irving Medical Center, New York, NY.
8. Department of Medicine (S.M.K., W.K.C.), Columbia University Irving Medical Center, New York, NY.
9. Division of Cardiothoracic Surgery (A.T), Children’s Hospital of Los Angeles, Los Angeles, CA.
10. Division of Pediatric Cardiology (N.C.), Yale School of Medicine, New Haven, CT.
11. Department of Cardiology (J.G., J.W.N.), Boston Children’s Hospital, Boston, MA.
12. Division of Cardiology, Department of Pediatrics (K.L, A.R., E.G.), The Children’s Hospital of Philadelphia, Philadelphia, PA.
13. Division of Human Genetics (A.R.), The Children’s Hospital of Philadelphia, Philadelphia, PA.
14. Department of Pediatrics, Golisano Children’s Hospital, University of Rochester Medical Center, Rochester, NY (E.T. and G.A.P).
15. Vagelos College of Physicians and Surgeons (A.T.), Columbia University Irving Medical Center, New York, NY.
16. Division of Biostatistics & Epidemiology (R.A., E.C.K.), Cincinnati Children’s Hospital Medical Center, Cincinnati, OH.
17. The Heart Institute (J.F.C.), Cincinnati Children’s Hospital Medical Center, Cincinnati, OH.
18. Pediatric Cardiac Surgery (R.W.K), Children’s Hospital of Los Angeles, Los Angeles, CA.
19. Department of Genetics and Pediatrics (M.B.), Yale School of Medicine, New Haven, CT.
20. Department of Genetics (C.E.S), Harvard Medical School, Boston, MA.
21. Cardiovascular Division, Brigham and Women’s Hospital, Boston, MA (C.E.S.).
22. Howard Hughes Medical Institute, Chevy Chase, MD (C.E.S.).
23. Departments of Systems Biology & Biomedical Informatics, Columbia University, New York, NY (Y.S.).
24. Departments of Pediatrics and Genetics & Genomic Sciences (B.D.G.), Icahn School of Medicine at Mount Sinai, New York, NY.
25. Division of Genetics, Department of Pediatrics (A.E.R.), Boston Children’s Hospital, Boston, MA.