1. Queen Elizabeth II Health Sciences Centre and Dalhousie University Halifax Nova Scotia Canada
2. University of Birmingham Birmingham UK
3. Hanyang University Hospital for Rheumatic Diseases Seoul Republic of Korea
4. Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Mexico City Mexico
5. McGill University Montreal Quebec Canada
6. University of Calgary Calgary Alberta Canada
7. Cedars‐Sinai Medical Center and University of California Los Angeles
8. University College London London UK
9. Oklahoma Medical Research Foundation Oklahoma City
10. Centre Hospitalier Universitaire de Québec–Université Laval Quebec City Quebec Canada
11. Centre for Prognosis Studies in the Rheumatic Diseases Toronto Western Hospital, and University of Toronto Ontario Canada
12. Centre for Epidemiology Versus Arthritis Manchester Academic Health Sciences Centre University of Manchester NIHR Manchester Biomedical Research Centre, and Manchester University NHS Foundation Trust Manchester UK
13. Johns Hopkins University School of Medicine Baltimore Maryland
14. State University of New York Downstate Medical Center Brooklyn
15. University of North Carolina Chapel Hill
16. Northwestern University Feinberg School of Medicine Chicago Illinois
17. Allegheny Health Network Pittsburgh Pennsylvania
18. Lund University Lund Sweden
19. University of Alabama at Birmingham
20. Amsterdam University Medical Center Amsterdam The Netherlands
21. Feinstein Institute for Medical Research Manhasset New York
22. Hospital Universitario Cruces and University of the Basque Country Barakaldo Spain
23. Emory University Atlanta Georgia
24. Istanbul University Istanbul Turkey
25. University of California San Diego School of Medicine La Jolla
26. Rigshospitalet, Copenhagen University Hospital Copenhagen Denmark
27. University of Manitoba Winnipeg Manitoba Canada
28. Medical University of South Carolina Charleston
29. NYU Langone Orthopedic Hospital New York New York
30. University of Cambridge Cambridge UK