1. University of Oklahoma Health Sciences Center and U.S. Department of Veterans Affairs Oklahoma City Oklahoma
2. Hospital for Special Surgery New York New York
3. University of Alabama at Birmingham and Birmingham VA Medical Center Birmingham Alabama
4. Geriatric Research Education and Clinical Center VA Health Care System Minneapolis Minnesota
5. McMaster University Hamilton Ontario Canada
6. Arthritis Consultants of Tidewater Virginia Beach Virginia
7. University of Colorado Denver
8. Oklahoma City Oklahoma
9. UCLA Health Los Angeles California
10. University of Wisconsin Madison
11. UC Davis Health Sacramento California
12. Children's Hospital Colorado, University of Colorado School of Medicine Aurora
13. Case Western Reserve University, MetroHealth Cleveland Ohio
14. Tufts University Boston Massachusetts
15. Cleveland Clinic Foundation Cleveland Ohio
16. Brigham and Women's Hospital Boston Massachusetts
17. UMass Memorial Health and UMass Chan Medical School Worcester Massachusetts
18. University of Minnesota Minneapolis
19. American College of Rheumatology Atlanta Georgia
20. VA Puget Sound Health Care System and University of Washington School of Medicine Seattle Washington
21. ECRI Institute, Plymouth Meeting Pennsylvania