[1] Univ Coll Dublin, Dublin, Ireland
[2] Univ Toronto, Toronto, ON, Canada
[3] Western Univ, Toronto, ON, Canada
[4] Toronto Gen Hosp, Univ Hlth Network Lib Serv, Toronto, ON, Canada
[5] Queens Univ, Kingston, ON, Canada
[6] Univ Toronto, Univ Hlth Network, Inst Hlth Policy, Ctr Prognosis Studies,Div Rheumatol,Toronto Weste, Toronto, ON, Canada
[7] Univ Manitoba, Winnipeg, MB, Canada