1. aNationwide Children’s Hospital, Columbus, Ohio
2. bOhio State University, Columbus, Ohio
3. cChildren’s Hospital of Philadelphia, Philadelphia, Pennsylvania
4. dEmory University, Atlanta, Georgia
5. eChilders’s Healthcare of Atlanta, Atlanta, Georgia
6. fAtrium Health Levine Children’s Hospital, Charlotte, North Carolina
7. gWake Forest University School of Medicine, Winston-Salem, North Carolina
8. hUniversity of California San Francisco Benioff Children’s Hospital Oakland, Oakland, California
9. iUniversity of California, San Francisco, San Francisco, California
10. jUniversity of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
11. kThe Hospital for Sick Children, Toronto, Ontario, Canada
12. lChildren's Health Orange County, Orange, California
13. mAnn and Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois
14. nFeinberg School of Medicine, Northwestern University, Chicago, Illinois
15. oUniversity of Colorado School of Medicine, Aurora, Colorado
16. pChildren’s Hospital Colorado, Aurora, Colorado
17. qChildren’s Hospitals Neonatal Consortium, Dover, Delaware
18. rSt. Louis Children’s Hospital, St. Louis, Missouri
19. sWashington University School of Medicine, St. Louis, Missouri