1. Department of Emergency Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada
2. Department of Critical Care Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada
3. Department of Medicine, Division of Critical Care, St. Joseph's Health Centre, University of Toronto, Toronto, Canada
4. Division of Emergency Medicine and the Interdepartmental Division of Critical Care, University of Toronto, St. Michael’s Hospital, Toronto, Ontario, Canada