1. Seattle Children’s Hospital Seattle Washington
2. Cincinnati Children’s Hospital Medical CenterUniversity of Cincinnati Cincinnati Ohio
3. University of Alabama Birmingham
4. McMaster University Hamilton Ontario Canada
5. Children’s Mercy Hospital Kansas City Missouri
6. National Institutes of Health Bethesda Maryland
7. The Hospital for Sick Children and the University of Toronto Toronto Ontario Canada
8. University of Iowa Carver College of Medicine Iowa City
9. Children’s Hospital of RichmondVirginia Commonwealth University Richmond
10. BC Children’s Hospital Vancouver British Columbia Canada
11. Columbia University Medical Center New York New York
12. Brigham & Women’s Hospital and Boston Children’s Hospital Boston Massachusetts
13. Medical University of South Carolina Charleston
14. Duke University Durham North Carolina
15. Boston Children’s Hospital Boston Massachusetts
16. American College of Rheumatology Atlanta Georgia
17. ECRI Institute Plymouth Meeting Pennsylvania