1. School of Medicine and Health Sciences, The George Washington University and Children’s National Health System, Washington, District of Columbia;
2. School of Medicine, University of Utah, Salt Lake City, Utah;
3. Wayne State University and Children’s Hospital of Michigan, Detroit, Michigan;
4. College of Medicine–Phoenix, University of Arizona and Phoenix Children’s Hospital, Phoenix, Arizona;
5. Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania;
6. University of California, Los Angeles and University of California, Los Angeles Mattel Children’s Hospital, California;
7. University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania;
8. Nationwide Children’s Hospital, Columbus, Ohio;
9. University of California, San Francisco and University of California, San Francisco Benioff Children’s Hospital, San Francisco, California;
10. University of Colorado and Children’s Hospital of Colorado, Denver, Colorado;
11. Keck School of Medicine, University of Southern California and Children’s Hospital Los Angeles, Los Angeles, California; and
12. Princeton University, Princeton, New Jersey