1Department of Medicine, University of Ottawa, Ottawa, ON, Canada.
2Institute of Health Policy, Evaluation and Management, University of Toronto, Toronto, ON, Canada.
3Department of Family Medicine, University of Ottawa, Ottawa, ON, Canada.
4Department of Intensive Care, Université de Montréal, Montreal, Canada.
5Department of Emergency Medicine, The Ottawa Hospital, Ottawa, ON, Canada.
6Division of Critical Care Medicine, Montfort Hospital, Ottawa, ON, Canada.
7Ornge (Transport Medicine), Mississauga, ON, Canada.
8OBS Medical (United Kingdom), Gloucestershire, United Kingdom.
9Department of Critical Care, Ottawa Hospital, Ottawa, ON, Canada.
10Clinical Epidemiology Program, Ottawa Hospital Research Institute, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada, 1 (613) 562-5800.
11Division of Palliative Medicine, Ottawa Hospital, Ottawa, Canada.
12Department of Thoracic Surgery, University of Ottawa, Ottawa, ON, Canada.
13School of Epidemiology & Public Health, University of Ottawa, Ottawa, ON, Canada.