1. Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
2. Department of Anesthesiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
3. Division of Palliative Medicine, Department of Oncology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
4. Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
5. Interdepartmental Division of Critical Care, Department of Medicine, University of Toronto, Toronto, Ontario, Canada.
6. Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
7. Faculty of Nursing, University of Calgary, Calgary, Alberta, Canada.