1. Combat Mortality Prevention Division, US Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX, USA
2. Department of Emergency Medicine, Brooke Army Medical Center, JBSA Fort Sam Houston, San Antonio, TX, USA
3. Department of Pediatrics, 59th Medical Wing, JBSA Lackland, San Antonio, TX, USA
4. Department of Military and Emergency Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
5. Department of Emergency Medicine, Madigan Army Medical Center, Joint Base Lewis McChord, Tacoma, Washington, DC, USA
6. 2nd Brigade, 4th Infantry Division, Fort Carson, Colorado Springs, CO, USA