1. Sunnybrook Centre for Prehospital Medicine, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
2. County of Simcoe Paramedic Services, Midhurst, Ontario, Canada
3. Royal Victoria Regional Health Centre, Barrie, Ontario, Canada
4. Southlake Regional Health Centre, Newmarket, Ontario, Canada
5. Division of Emergency Medicine, Department of Family and Community Medicine, University of Toronto, Toronto, Ontario, Canada
6. Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
7. Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
8. Li Ka Shing Knowledge Institute, St. Michaels Hospital, Toronto, Ontario, Canada