1. Departments of Emergency Medicine, University of Alberta, Edmonton, AB, Canada;
2. Department of Emergency Medicine, Mt. Sinai Hospital, Toronto, ON, Canada;
3. Medicine, University of Alberta, Edmonton, AB, Canada;
4. Division of Emergency Medicine, Laval University, Quebec City, PQ, Canada;
5. Department of Emergency Medicine, Dalhousie University, Halifax, NS, Canada;
6. Departments of Emergency Medicine and of Biomedical & Molecular Sciences, Queen’s University, Kingston, ON, Canada;
7. Department of Emergency Medicine, University of British Columbia, Vancouver, BC, Canada;
8. Department of Emergency Medicine and Medicine, The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada
9. School of Public Health, University of Alberta, Edmonton, AB, Canada;
10. Alberta Health Services (AHS) all in Edmonton, Edmonton, AB, Canada;