1. Vanderbilt University Medical Center
2. University of Utah
3. University of Calgary
4. St. Louis Children’s Hospital, Washington University in St. Louis
5. Nationwide Children’s Hospital, The Ohio State University
6. Johns Hopkins University School of Medicine
7. University of Pittsburgh
8. University of Colorado
9. University of Washington, Seattle Children’s Hospital
10. University of British Columbia
11. University of Toronto
12. University of Alabama at Birmingham, Children’s of Alabama
13. Baylor College of Medicine