1. University of Pennsylvania School of Medicine Philadelphia
2. Boston University School of Medicine Boston Massachusetts
3. University of Maryland School of Medicine and Veterans Affairs Maryland Health Care System Baltimore
4. Arcadia University Glenside Pennsylvania
5. McMaster University Hamilton Ontario Canada
6. Rush University Medical Center Chicago Illinois
7. University of North Carolina School of Medicine Chapel Hill
8. South Holland Recreational Services, University of Chicago, and Ingalls Memorial Hospital Thornton Illinois
9. University of Michigan Medical Center Ann Arbor
10. Watchung New Jersey
11. Tufts Medical Center Boston Massachusetts
12. University of Toronto Toronto Ontario Canada
13. Fairfield Ohio
14. University of Arizona College of Medicine Tucson
15. New York University Langone Medical Center New York New York
16. University of Delaware Newark
17. University of California Davis
18. Ronald Reagan UCLA Medical Center Los Angeles California
19. Johns Hopkins University School of Medicine Baltimore Maryland
20. ECRI Institute Plymouth Meeting Pennsylvania
21. Cedars Sinai Medical Center Los Angeles California
22. American College of Rheumatology Atlanta Georgia
23. University of Minnesota Minneapolis