| Affiliation: | 1. Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado;2. Department of Emergency Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado;3. Health Sciences Library, University of Colorado Anschutz Medical Campus, Aurora, Colorado;4. Center for Injury Epidemiology and Prevention, Department of Anesthesiology, College of Physicians and Surgeons, Columbia University, New York, New York;5. Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York |
