[1] McGill Univ, Dept Epidemiol Biostat & Occupat Hlth, Montreal, PQ, Canada
[2] Hosp Special Surg, 535 E 70th St, New York, NY 10021 USA
[3] McGill Univ, Montreal, PQ, Canada
[4] Univ Manitoba, Winnipeg, MB, Canada
[5] Western Univ, Dept Med, Div Rheumatol, London, ON, Canada
[6] Univ Sherbrooke, Sherbrooke, PQ, Canada
[7] Inst Rhumatol Montreal, Montreal, PQ, Canada
[8] Univ Toronto, Mt Sinai Hosp, Toronto, ON, Canada
[9] Southlake Reg Hlth Ctr, Newmarket, ON, Canada
[10] McGill Univ, Ctr Hlth, Montreal, PQ, Canada