1. Department of Military and Emergency Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814.
2. U.S. Air Force, F. Edward Hebert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814.
3. U.S. Army, F. Edward Hebert School of Medicine Uniformed Services University of the Health Sciences, Bethesda, MD 20814.
4. Dwight D. Eisenhower Army Medical Center, Fort Gordon, GA 30905.
5. James A. Zimble Learning Resource Center, Uniformed Services University of the Health Sciences, Bethesda, MD 20814.