[1] McGill Univ, Montreal, PQ, Canada
[2] Univ British Columbia, Arthrit Res Canada, Vancouver, BC, Canada
[3] Univ British Columbia, Vancouver, BC, Canada
[4] Univ Laval, Laval, PQ, Canada
[5] Univ Laval, CHU Quebec, Dept Med, Div Rheumatol, Laval, PQ, Canada
[6] McGill Univ, Dept Epidemiol Biostat & Occupat Hlth, Montreal, PQ, Canada
[7] McGill Univ, Hlth Ctr, Montreal, PQ, Canada