1 Division of Rheumatology, McGill University Health Centre, and Alan and Louise Edwards Pain Management Center, McGill University Health Centre; [email protected].
2 Division of Rheumatology, McGill University Health Centre, Montreal, Quebec, Canada;
3 Mary Pack Arthritis Program, Vancouver General Hospital;
4 Division of Rheumatology, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada.