[1] Univ Copenhagen, Hosp Bispebjerg & Frederiksberg, Dept Rheum, Musculoskeletal Stat Unit,Parker Inst, Frederiksberg, Denmark
[2] Univ Southern Denmark, Fac Hlth Sci, Inst Sports Sci & Clin Biomech, SEARCH Res Grp Res Unit Musculoskeletal Funct & P, Odense, Denmark
[3] Univ Copenhagen, Hosp Herlev & Gentofte, Dept Rehabil, Herlev, Denmark
[4] Univ Paris 05, INSERM, Sorbonne Paris Cite, METHODS Team,Ctr Res Epidemiol & Stat,UMR 1153, Paris, France
[5] Ottawa Hosp, Res Inst, Ctr Practice Changing Res, Cochrane Methods Bias Grp, Ottawa, ON, Canada
[6] Ottawa Hosp, Res Inst, Ctr Practice Changing Res, Cochrane Musculoskeletal Grp, Ottawa, ON, Canada
[7] Ottawa Hosp, Res Inst, Joint Coordinating Editor CMSG, Ottawa, ON, Canada
[8] Univ Ottawa, Epidemiol & Community Med, Ottawa, ON, Canada
[9] Ottawa Hosp, Res Inst, Ctr Practice Changing Res, Ottawa, ON, Canada
[10] Bruyere Res Inst, Ottawa, ON, Canada
[11] Bergen Univ Coll, Ctr Evidence Based Practice, Bergen, Norway