1. Department of Family Medicine, University of Toronto; Addiction Medicine Service, Department of Family Medicine, St Joseph’s Health Centre, Canada
2. Department of Medicine, Division of Physiatry, Institute of Medical Science, University of Toronto; Comprehensive Pain Program, Toronto Western Hospital; ACTION Ontario, Centre for the Study of Pain, Toronto, Canada
3. Department of Psychiatry, McMaster University, Hamilton; Canadian Memorial Chiropractic College, Toronto, Ontario, Canada