1. Department of Emergency Medicine University of Alberta Edmonton Alberta Canada
2. Department of Family Medicine McMaster University Hamilton Ontario Canada
3. Division of Emergency Medicine Department of Medicine McMaster University Hamilton Ontario Canada
4. Department of Emergency Medicine Northwestern University Chicago IL
5. Department of Emergency Medicine University of Minnesota Minneapolis MN
6. USC and LAC Departments of Emergency Medicine David Geffen School of Medicine at UCLA Los Angeles CA
7. Department of Emergency Medicine University of Calgary Calgary Alberta Canada
8. Department of Emergency Medicine University of Saskatchewan Saskatoon Saskatchewan Canada