[1] Univ Toronto, Toronto, ON, Canada
[2] UHN, Toronto, ON, Canada
[3] Toronto Western Hosp, Univ Hlth Network, Div Rheumatol, Toronto, ON, Canada
[4] Toronto Western Hosp, Toronto, ON, Canada
[5] Univ Hlth Network, Toronto, ON, Canada
[6] Univ Calgary, Calgary, AB, Canada
[7] Toronto Western Res Inst, Toronto, ON, Canada
[8] Univ Estadual Campinas, Sao Paulo, Brazil
[9] Univ Calif San Francisco, Med & Hlth Policy, Div Rheumatol, Dept Med, San Francisco, CA USA
[10] Univ Toronto, Inst Work & Hlth, Toronto, ON, Canada
[11] Krembil Res Inst, Div Genet & Dev, Toronto, ON, Canada
[12] Univ Hlth Network, Div Rheumatol, Toronto, ON, Canada
[13] Univ Toronto, Dept Immunol, Toronto, ON, Canada
[14] Univ Toronto, Univ Hlth Network, Inst Hlth Policy Management & Evaluat, Toronto Western Hosp,Ctr Prognosis Studies,Div Rh, Toronto, ON, Canada