1. Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, Ontario, Canada
2. Department of Anesthesia and Pain Management Pain Research Unit, Toronto General Hospital, Toronto, Ontario, Canada
3. Transitional Pain Service, Toronto General Hospital, Toronto, Ontario, Canada
4. Department of Anesthesiology, Perioperative and Pain Medicine, University of Calgary, Calgary, Alberta, Canada
5. Department of Medicine, Cedars Sinai Medical Center, Los Angeles, California, USA
6. Child Health Evaluative Sciences, the Hospital for Sick Children, Toronto, Ontario, Canada
7. Pain BC/Pain Canada, Vancouver, British Columbia, Canada
8. Vancouver General Hospital, Vancouver, British Columbia, Canada
9. Toronto Academic Pain Medicine Institute, Toronto, Ontario, Canada