1. Pain and Symptom Management/Palliative Care Department, BC Cancer, Vancouver, British Columbia, Canada.
2. Division of Palliative Care, Interdepartmental Division of Departments of Medicine, Family Practice, and Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada.
3. Pain and Symptom Management/Palliative Care Program, BC Cancer, Kelowna, British Columbia, Canada.
4. Anesthesiology, Pharmacology, and Therapeutics, Faculty of Medicine, University of British Columbia-Okanagan, Kelowna, British Columbia, Canada.