1. School of Medicine, University of Minnesota, Minneapolis, MN, USA;
2. Royal College of Physicians and Surgeons of Canada, Ottawa, Canada;
3. Department of Emergency Medicine, University of Ottawa, Ottawa, Canada;
4. American Board of Pediatrics, Chapel Hill, NC, USA;
5. Division of Emergency Medicine, Department of Medicine, McMaster University, Hamilton, Canada;
6. Department of Family Medicine, University of Alberta, Edmonton, Canada;
7. Centre for Medical and Department of General Internal Medicine, McGill University, Montreal, Quebec, Canada