1. Air Force En Route Care Research Center/59th Medical Wing/Science and Technology, U.S. Army Institute of Surgical Research , JBSA Ft. Sam Houston, TX 78234, USA
2. 711 Human Performance Wing/US Air Force School of Aerospace Medicine, University of Cincinnati Center for Sustainment of Trauma and Readiness Skills , Cincinnati, OH 45219, USA
3. Commanders Office, U.S. Army Institute of Surgical Research , Fort Sam, Houston, TX 78234, USA
4. Department of Emergency Medicine, Brooke Army Medical Center , Fort Sam Houston, TX 78234, USA
5. Department of Military and Emergency Medicine, Uniformed Services University , Bethesda, MD 20814, USA