1. Division of Emergency Medicine Greater Los Angeles VA Healthcare System, and the Department of Emergency Medicine David Geffen School of Medicine UCLA Los Angeles CA
2. School of Medicine University of Toronto Toronto Ontario Canada
3. Department of Medicine Division of Emergency Medicine McMaster University, and the McMaster Education Research, Innovation, and Theory Program Hamilton Ontario Canada
4. Department of Emergency Medicine University of Saskatchewan Saskatoon Saskatchewan Canada
5. Galter Health Sciences Library & Learning Center Feinberg School of Medicine Chicago IL
6. Department of Emergency Medicine Northwestern University Chicago IL