1 Department of Critical Care Medicine, Department of Anesthesiology, Division of Palliative Medicine, Department of Oncology, Cumming School of Medicine, University of Calgary.
2 Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary.
3 Department of Pediatrics, Cumming School of Medicine, University of Calgary.
4 Department of Community Health Sciences, Cumming School of Medicine, University of Calgary.