1. Rebecca MacDonald Centre for Arthritis and Autoimmune Diseases; 60 Murray Street, Room L2007 Toronto ON Canada M5T 3L9
2. Canadian Memorial Chiropractic College; Division of Graduate Eduation and Research; 19-8 Weston Drive SW Calgary Alberta Canada T3H 5P2
3. Mount Sinai Hospital; Samuel Lunenfeld Research Institute; 60 Murray Street Toronto ON Canada
4. Toronto Western Hospital; Division of Orthopedics, University Health Network; 399 Bathurst Street, EW-1-441 Toronto ON Canada M5T 2S8
5. Institute for Work & Health; 481 University Avenue, Suite 800 Toronto ON Canada M5G 2E9
6. The Cochrane Collaboration; Cochrane Editorial Unit; 11-13 Cavendish Square London UK W1G 0AN
7. Institute of Work and Health; Workplace studies; 481 University Avenue, Suite 800 Toronto Ontario Canada M5G 2E9
8. Haarlem Netherlands