1. Department of Preventive Medicine and Population Health, University of Texas Medical Branch, Galveston, Texas, USA.
2. School of Medicine and The Graduate School of Biomedical Sciences, University of Texas Medical Branch, Galveston, Texas, USA.
3. KBR, Houston, Texas, USA.
4. Exploration Medical Capability, Johnson Space Center, National Aeronautics and Space Administration, Houston, Texas, USA.
5. Department of Emergency Medicine and Center for Space Medicine, Baylor College of Medicine, Houston, Texas, USA.