1. Department of Flight Medicine, Expeditionary Medical Facility, Camp Lemonnier, Djibouti
2. Department of Ophthalmology, Brooke Army Medical Center, San Antonio, TX, USA
3. Department of Surgery, Uniformed Services University, Bethesda, MD, USA
4. Department of Statistics, Walter Reed National Military Medical Center, Bethesda, MD, USA
5. Warfighter Refractive Eye Surgery Program and Research Center, Fort Belvoir, VA, USA
6. Retina Group of Washington D.C., Greenbelt, MD, USA
7. Department of Ophthalmology, Walter Reed National Military Medical Center, Bethesda, MD, USA