1. Military Operational Medicine Research Program, U.S. Army Medical Research and Development Command , Fort Detrick, MD 21702, USA
2. Biophysics and Biomedical Modeling Division, U.S. Army Research Institute of Environmental Medicine , Natick, MA 01760, USA
3. Department of Army Health and Performance Research (AHPR), British Army , Andover, Hampshire SP11 8HT, UK
4. Henry M Jackson Foundation for the Advancement of Military Medicine , Bethesda, MD 20817, USA
5. Research and Analysis Directorate, U.S. Army Center for Initial Military Training , Fort Eustis, VA 23604, USA
6. Military Performance Division, U.S. Army Research Institute of Environmental Medicine , Natick, MA 01760, USA
7. Chief, U.S. Army Medical Specialist Corps, U.S. Army Medical Command , Falls Church, VA 22042, USA