1. Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, Colorado
2. Department of Emergency Medicine, Duke University School of Medicine, Durham, North Carolina
3. Harvard Affiliated Emergency Medicine Residency, Beth Israel Deaconess Medical Center, Boston, Massachusetts
4. School of Medicine, University of California San Diego, San Diego, California
5. Willacy County EMS, Raymondville, Texas
6. ESO, Austin, Texas
7. Albany Medical College, Albany, New York
8. Department of Emergency Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
9. Atlanta Fire Rescue Department; Department of Emergency Medicine, University of Tennessee-Chattanooga, Chattanooga, Tennessee
10. Duke University Medical Center Library, Duke University, Durham, North Carolina
11. San Diego Fire - Rescue Department, San Diego, California
12. University of Texas Southwestern Medical Center, Dallas, Texas
13. Division of Emergency Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida
14. Department of Emergency Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California
15. Section of Emergency Medicine, University of Chicago School of Medicine, Chicago, Illinois