| Affiliation: | 1. From the School of Medicine (MR, JT) and the Department of Emergency Medicine (KM, SC, EL), University of Calgary, Calgary, Alberta, Canada;2. the Division of Emergency Medicine, College of Human Medicine, Michigan State University (MB), Grand Rapids, MI;3. the Department of Emergency Medicine, Dalhousie University (PA), Halifax, Nova Scotia, Canada;4. Saint John Regional Hospital (PA), Saint John, New Brunswick, Canada;5. the Health Sciences Library, University of Calgary (SP), Calgary, Alberta, Canada;6. and Alberta Health Services (SC, EL), Calgary, Alberta, Canada. |
