1. The Department of Emergency Medicine, Health Science North Research Institute, Northern Ontario School of Medicine University, Sudbury, Ontario, Canada
2. Department of Critical Care, Department of Anaesthesia, Northern Ontario School of Medicine University, Sudbury, Ontario, Canada
3. Department of Undergraduate Medicine, University of Ottawa, Ottawa, Ontario, Canada
4. Department of Undergraduate Medicine, Northern Ontario School of Medicine, Sudbury, Ontario, Canada
5. Clinical Sciences Division, Nortner Ontario School of Medicine University, Thunder Bay, Ontario, Canada
6. Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada