1. Department of Military and Emergency Medicine, Uniformed Services University , Bethesda, MD 20814, USA
2. Department of Health Professions Education, Uniformed Services University , Bethesda, MD 20814, USA
3. University of Colorado Anschutz Medical Campus School of Medicine , Aurora, CO 80045, USA
4. Joint Trauma System, Defense Health Agency , San Antonio, TX
5. Committee on Surgical Combat Casualty, Defense Committees on Trauma, Joint Trauma System , San Antonio, TX
6. Department of Surgery, Naval Medical Center San Diego , San Diego, CA
7. Naval Medical Center Portsmouth , Portsmouth, VA