1. Joint Trauma System, Defense Center of Excellence for Trauma, Fort Sam Houston, San Antonio, Texas
2. Joint Trauma System, Defense Center of Excellence for Trauma, Fort Sam Houston, San Antonio, Texas2Department of Epidemiology and Biostatistics, University of Texas Health Science Center, San Antonio
3. US Army Aeromedical Research Laboratory, Fort Rucker, Alabama
4. Armed Forces Medical Examiner System, Dover Air Force Base, Delaware
5. Army Trauma Training Department, Miami, Florida