[1] Univ Calgary, Cumming Sch Med, Dept Med, Div Rheumatol, Calgary, AB, Canada
[2] Univ Calgary, Cumming Sch Med, Dept Community Hlth Sci, Calgary, AB, Canada
[3] Alberta Hlth Serv, Edmonton, AB, Canada
[4] Univ British Columbia, Dept Med, Div Rheumatol, Vancouver, BC, Canada
[5] Arthrit Res Canada, Richmond, BC, Canada
[6] Univ Toronto, Toronto, ON, Canada
[7] Univ Queensland, Brisbane, Qld, Australia