1. Johns Hopkins University Baltimore Maryland
2. University of Alabama at Birmingham
3. University of Birmingham Birmingham UK
4. Oklahoma Medical Research Foundation Oklahoma City
5. CHU de Québec – Université Laval Quebec City Quebec Canada
6. The University of Manchester and Manchester University Hospital NHS Foundation Trust Manchester Academic Health Science Center Manchester UK
7. University College London UK
8. Cedars‐Sinai and University of California Los Angeles
9. Lund University Lund Sweden
10. Northwestern University Chicago Illinois
11. Hanyang University Hospital for Rheumatic Diseases Seoul Republic of Korea
12. Queen Elizabeth II Health Sciences Centre and Dalhousie University Halifax Nova Scotia Canada
13. Centre for Prognosis Studies in the Rheumatic Diseases Toronto Western Hospital and University of Toronto Toronto Ontario Canada
14. University of Calgary Calgary Alberta Canada
15. Feinstein Institute for Medical Research Manhasset New York
16. Allegheny Health Network Pittsburgh Pennsylvania
17. University of California at San Diego La Jolla
18. Hospital of the University of Pennsylvania and Department of Veterans Affairs Medical Center Philadelphia
19. Lanarkshire Centre for Rheumatology Hairmyres Hospital East Kilbride Scotland, UK
20. McGill University Health Centre Montreal Quebec Canada
21. The Rayne Institute St Thomas’ Hospital King’s College London London UK
22. Rigshospitalet, Copenhagen University Hospital Copenhagen Denmark
23. New York University New York New York
24. University of North Carolina Chapel Hill
25. Amsterdam University Medical Centres University of Amsterdam Free University, and Amsterdam Rheumatology and Immunology Center Amsterdam The Netherlands
26. State University of New York Downstate Medical Center Brooklyn
27. Kantonsspital Schaffhausen Switzerland
28. University of Manitoba Winnipeg Manitoba Canada
29. Wake Forest University, Winston‐Salem, North Carolina, and Weill Cornell Medicine New York New York
30. University of Louisville Louisville Kentucky
31. Emory University Atlanta Georgia
32. Istanbul University Istanbul Turkey
33. Medical University of South Carolina Charleston
34. Fossvogur Landspitali University Hospital Reyjkavik Iceland
35. University of Maryland Baltimore