1. Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Canada
2. Department of Psychiatry, McGill University, Montreal, Canada
3. Department of Psychology, McGill University, Montreal, Canada
4. Research Centre, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Canada
5. Department of Medicine, McGill University, Montreal, Canada
6. AP-HP Cochin Hospital, Université Paris Descartes Sorbonne Paris Cité, INSERM U1153, Paris, France
7. Division of Rheumatology, Geffen School of Medicine, University of California, Los Angeles, USA
8. Department of Internal Medicine, University of Utah, Salt Lake City, USA
9. Faculté de Santé, Université de Paris, UFR Médecine Paris Descartes, Assistance Publique-Hôpitaux de Paris, Hôpital Cochin, Service de Rééducation et de Réadaptation de l’Appareil Locomoteur et des Pathologies du Rachis, Paris, France
10. St. Joseph’s Health Care and the Lawson Health Research Institute, London, Canada
11. Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Canada