Affiliation: | 1. University of Calgary, 1403 29 St NW Calgary, Alberta T2N 2T9, Canada;2. Division of Emergency Medicine, London Health Sciences Centre, Western University, 800 Commissioners Road East, London, Ontario N6A 5W9, Canada;3. Division of Critical Care Medicine, London Health Sciences Centre, Western University, 800 Commissioners Road East, London, Ontario N6A 5W9, Canada |