[1] Univ Calgary, Calgary, AB, Canada
[2] Univ Toronto, Sunnybrook Res Inst, ICES, Toronto, ON, Canada
[3] Univ Toronto, Toronto, ON, Canada
[4] Arthrit Program Res Grp, Newmarket, Suffolk, England
[5] Univ Alberta, Div Rheumatol, Edmonton, AB, Canada
[6] McMaster Univ, Hamilton, ON, Canada
[7] Womens Coll Hosp, Toronto, ON, Canada
[8] St Michaels Hosp, Toronto, ON, Canada
[9] Univ Manitoba, Winnipeg, MB, Canada
[10] Dalhousie Univ, Div Rheumatol, Dartmouth, NS, Canada
[11] Univ British Columbia, Vancouver, BC, Canada
[12] St Clare Mercy Hosp, St John, NF, Canada
[13] Univ Calgary, Alberta Childrens Hosp, Dept Paediat, Rheumatol Sect, Calgary, AB, Canada
[14] Univ British Columbia, Arthrit Res Canada, Vancouver, BC, Canada
[15] Univ Western Ontario, London, ON, Canada
[16] Univ Calgary, Arthrit Res Canada, Calgary, AB, Canada