1. LC Li, BSc(PT), MSc, is Research Fellow, Health Care Research Division, Arthritis & Autoimmunity Research Centre, University Health Network, 610 University Ave, 16th Floor, Toronto, Ontario, Canada M5G 2M9.
2. C Bombardier, MD, FRCP(C), is Clinical Research Coordinator, Institute for Work & Health; Director, Arthritis & Autoimmunity Research Centre, University Health Network; Professor of Clinical Epidemiology and Director, Heath Care Research Program, Department of Medicine, and Department of Health Administration, University of Toronto; and Staff Physician, Department of Medicine, Mt Sinai Hospital,