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