1. University of the Incarnate Word—School of Medicine , San Antonio, TX 78209, USA
2. 40th Forward Resuscitative Surgical Detachment , Fort Carson, CO 80902, USA
3. Uniformed Services University of the Health Sciences , Bethesda, MD 20814, USA
4. Department of Emergency Medicine, Brooke Army Medical Center , JBSA Fort Sam Houston, TX 78234, USA
5. US Army Institute of Surgical Research , JBSA Fort Sam Houston, TX 78234, USA