1. Department of Emergency Medicine, University of Alberta, Edmonton, Alberta, Canada
2. School of Medicine, Trinity College Dublin, University of Dublin, Dublin, Ireland
3. Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
4. School of Public Health, University of Alberta, Edmonton, Alberta, Canada
5. John W. Scott Health Sciences Library, University of Alberta, Edmonton, Alberta, Canada
6. Alberta Health Services, Edmonton, Alberta, Canada