1. University of Michigan Health Ann Arbor
2. Arizona Arthritis & Rheumatology Research Phoenix
3. Michigan State University Grand Rapids
4. University of California Los Angeles
5. Hospital for Special Surgery New York New York
6. Heartland Research Associates Wichita, Kansas
7. Duke University Medical Center Durham North Carolina
8. Rutgers University New Brunswick New Jersey
9. Alliance for Multispecialty Research Kansas City Missouri
10. Boston University Medical Center Boston Massachusetts
11. University of Pittsburgh Pittsburgh Pennsylvania
12. MedStar Georgetown University Hospital Washington DC
13. Johns Hopkins University Baltimore Maryland
14. University of Pennsylvania Philadelphia
15. University of Texas Houston McGovern Medical School
16. Cleveland Clinic Orthopedic & Rheumatologic Institute Cleveland Ohio
17. Northwestern University, Chicago, Illinois, and University of Michigan Ann Arbor
18. Salish Kootenai College Carlsbad, California
19. JKF Consulting San Diego, California