1. University of British Columbia, Vancouver, British Columbia, Canada
2. Arthritis Research Canada, Vancouver, British Columbia, Canada
3. Surrey Memorial Hospital, Surrey, British Columbia, Canada
4. Fraser Health, Surrey, British Columbia, Canada
5. Providence Health Care, Vancouver, British Columbia, Canada
6. Vancouver Coastal Health Authority, Vancouver, British Columbia, Canada
7. Vancouver General Hospital, Vancouver, British Columbia, Canada
8. Burnaby General Hospital, Burnaby, British Columbia, Canada
9. Northern Health, Prince George, British Columbia, Canada
10. Centre for Health Evaluation and Outcome Sciences, Vancouver, British Columbia, Canada.