1. School of Medicine, Faculty of Health Sciences, Queen’s University, Kingston, Ontario, Canada
2. Division of Emergency Medicine, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
3. Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada
4. Institute of Medical Science, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
5. Department of Emergency Medicine, St. Michael’s Hospital, Toronto, Ontario, Canada