[1] McGill Univ, Montreal, PQ, Canada
[2] Johns Hopkins Univ, Baltimore, MD USA
[3] Mt Sinai Hosp, Toronto, ON M5G 1X5, Canada
[4] Cardiff Univ, Sch Med, Cardiff, S Glam, Wales
[5] CHUS Sherbrooke Univ, Sherbrooke, PQ, Canada
[6] Univ Manitoba, Winnipeg, MB, Canada
[7] Western Univ Canada, St Josephs Hlth Care, London, ON, Canada
[8] Southlake Reg Hlth Ctr, Newmarket, ON, Canada
[9] Univ Montreal Hosp Res Ctr CRCHUM, Osteoarthrit Res Unit, Montreal, PQ, Canada
[10] Hosp Special Surg, New York, NY 10021 USA
[11] Univ Toronto, Toronto, ON, Canada