[1] Univ Zurich, Balgrist Univ Hosp, EBPI UWZH Musculoskeletal Epidemiol Res Grp, CH-8008 Zurich, Switzerland
[2] Univ Zurich, Epidemiol Biostat & Prevent Inst EBPI, Zurich, Switzerland
[3] Univ Zurich, Univ Spine Ctr Zurich UWZH, Balgrist Univ Hosp, Zurich, Switzerland
[4] Univ Quebec Trois Rivieres, Dept Chiropract, Trois Rivieres, PQ G9A 5H7, Canada
[5] Ontario Tech Univ, Fac Hlth Sci, Oshawa, ON, Canada
[6] Univ Toronto, Inst Hlth Policy Management & Evaluat, Dalla Lana Sch Publ Hlth, Toronto, ON, Canada
[7] Queens Univ, Sch Nursing, Joanna Briggs Inst Ctr Excellence, Queens Collaborat Hlth Care Qual, Toronto, ON, Canada
[8] St Michaels Hosp, Unity Hlth Toronto, Li Ka Shing Knowledge Inst, Toronto, ON, Canada
[9] Capitale Natl CIRRIS CIUSSS CN, Centre Interdisciplinaire Rech Readaptat Integrat, Ctr Integre Univ Sante & Serv Sociaux, Quebec City, PQ G1C 3S2, Canada
[10] Univ Zurich, Balgrist Univ Hosp, EBPI UZWH Musculoskeletal Epidemiol Res Grp, CH-8008 Zurich, Switzerland