1. University of Montreal Health Center; Montreal, Quebec Canada
2. Toronto Western Hospital, University Health Network, and University of Toronto; Toronto, Ontario Canada
3. Montreal General Hospital; Montreal, Quebec Canada
4. University of Colorado; Denver
5. McGill University Health Center; Montreal, Quebec Canada
6. Hanyang University Hospital for Rheumatic Diseases; Seoul South Korea
7. Queen Elizabeth II Health Sciences Centre and Dalhousie University; Halifax, Nova Scotia Canada
8. Cedars-Sinai Medical Center; Los Angeles California
9. University of Birmingham; Birmingham UK
10. University College London; London UK
11. Centre Hospitalier Universitaire de Québec, Université Laval; Québec, Québec Canada
12. Oklahoma Medical Research Foundation; Oklahoma City
13. National Institute of Nutrition; Mexico City Mexico
14. University of Alabama at Birmingham
15. Landspitali University Hospital; Reykjavik Iceland
16. NIHR Manchester Musculoskeletal Biomedical Research Unit, University of Manchester; Manchester UK
17. State University of New York Health Science Centre; Brooklyn
18. University of North Carolina; Chapel Hill
19. University Hospital Lund; Lund Sweden
20. University of California; San Diego
21. Servicio de Enfermedades Autoinmunes; Barcelona Spain
22. Johns Hopkins University; Baltimore Maryland
23. Stonehouse Hospital; Glasgow UK