1 Division of Rheumatology and Department of Medicine, QEII Health Sciences Centre and Dalhousie University, Halifax, Nova Scotia; janet3.roberts@nshealth.ca.
2 Arthritis Research Canada, Richmond, British Columbia.
3 QEII Health Sciences Centre, Physiotherapy, Halifax, Nova Scotia.
4 Division of Rheumatology and Department of Medicine, QEII Health Sciences Centre and Dalhousie University, Halifax, Nova Scotia.
5 Department of Medicine and Department of Community Health Services, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.