1. Rush University Medical Center, Department of Emergency Medicine, Chicago, Illinois
2. University of California Irvine Health School of Medicine, Department of Emergency Medicine, Irvine, California
3. University of California Irvine, UCI Science Library Reference Department, Irvine, California
4. Geisinger Health System, Department of Emergency Medicine, Danville, Pennsylvania
5. University of Texas McGovern School of Medicine, Houston, Texas