1. School of Medicine, Uniformed Services University of the Health Sciences , Bethesda, MD 20814, USA
2. Program in Neuroscience, Uniformed Services University , Bethesda, MD 20814, USA
3. Department of Anesthesiology, Uniformed Services University , Bethesda, MD 20814, USA
4. Department of Psychiatry, Uniformed Services University , Bethesda, MD 20814, USA
5. Center for the Study of Traumatic Stress, Uniformed Services University , Bethesda, MD 20814, USA