1. Boston Children's Hospital and Harvard Medical School Boston Massachusetts
2. Children’s Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine
3. Morgan Stanley Children’s Hospital and Columbia University New York New York
4. Joseph M. Sanzari Children’s Hospital at Hackensack University Medical Center and Hackensack Meridian School of Medicine Hackensack New Jersey
5. University of Pittsburgh School of Medicine Pittsburgh Pennsylvania
6. Cincinnati Children’s Hospital Medical Center and University of Cincinnati College of Medicine Cincinnati Ohio
7. Johns Hopkins University School of Medicine Baltimore Maryland
8. University of California San Diego and Rady Children’s Hospital San Diego California
9. The Hospital for Sick Children and University of Toronto Toronto Ontario Canada
10. University of Alabama at Birmingham Birmingham
11. American College of Rheumatology Atlanta Georgia
12. University of Texas Southwestern Medical Center Dallas