[1] Univ Toronto, Toronto, ON, Canada
[2] Univ Manchester, Manchester, Lancs, England
[3] Toronto Western Hosp, Univ Hlth Network, Div Rheumatol, Toronto, ON, Canada
[4] Univ Toronto, Toronto, ON, Canada
[5] Toronto Western Hosp, Toronto, ON, Canada
[6] UHN, Toronto, ON, Canada
[7] Toronto Western Hosp, Univ Hlth Network, Toronto, ON, Canada
[8] Univ Calgary, Calgary, AB, Canada
[9] Univ Estadual Campinas, Sao Paulo, Brazil
[10] Toronto Western Res Inst, Toronto, ON, Canada
[11] Univ Calif San Francisco, Prof Med & Hlth Policy, Div Rheumatol, Dept Med, San Francisco, CA USA
[12] Univ Toronto, Inst Work & Hlth, Toronto, ON, Canada
[13] Univ Toronto, Univ Hlth Network, Schroeder Arthrit Inst, Krembil Res Inst,Toronto Western Hosp, Toronto, ON, Canada
[14] Toronto Western Hosp, Schroeder Arthrit Inst, Krembil Res Inst, Toronto, ON, Canada