1. McGill University Montreal Quebec Canada
2. Northwestern University and Feinberg School of Medicine Chicago Illinois
3. Toronto Western Hospital and University of Toronto Toronto Ontario Canada
4. Queen Elizabeth II Health Sciences Centre and Dalhousie University Halifax Nova Scotia Canada
5. College of Medical and Dental Sciences University of Birmingham Birmingham UK
6. Johns Hopkins University School of Medicine Baltimore Maryland
7. State University of New York Downstate Medical Centre Brooklyn
8. Cedars‐Sinai/David Geffen School of Medicine at University of California Los Angeles
9. Hanyang University Hospital for Rheumatic Diseases Seoul Korea
10. Instituto Nacional de Ciencias Médicas y Nutrición Mexico City Mexico
11. University of North Carolina Chapel Hill
12. University of Manitoba Winnipeg Manitoba Canada
13. University College London London UK
14. Allegheny Health Network Pittsburgh Pennsylvania
15. Rigshospitalet, Copenhagen University Hospital Copenhagen Denmark
16. Emory University Atlanta Georgia
17. Amsterdam University Medical Centres Amsterdam The Netherlands
18. Lund University Lund Sweden
19. Medical University of South Carolina Charleston
20. Feinstein Institute for Medical Research Manhasset New York
21. Hospital Universitario Cruces University of the Basque Country Barakaldo Spain
22. CHU de Québec Université Laval Quebec City Quebec Canada
23. University of Alabama at Birmingham
24. Oklahoma Medical Research Foundation Oklahoma City
25. University of California, San Diego, School of Medicine La Jolla California
26. Hospital Clínic Barcelona Spain
27. Fossvogur Landspitali University Hospital Reykjavik Iceland
28. Hairmyres Hospital East Kilbride Scotland UK
29. Columbia University College of Physicians and Surgeons New York New York
30. St. Thomas’ Hospital King’s College London School of Medicine London UK
31. University of Manchester and NIHR Manchester Musculoskeletal Biomedical Research Centre Manchester University NHS Foundation Trust, and Manchester Academic Health Science Centre Manchester UK
32. Istanbul Medical Faculty Istanbul University Istanbul Turkey
33. Cumming School of Medicine University of Calgary Calgary Alberta Canada