1. Clinical Neurosciences Division, National Center for Posttraumatic Stress Disorder, Veterans Affairs Connecticut Healthcare System, West Haven
2. Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
3. Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, Connecticut
4. Departments of Psychiatry and Radiology, New York University School of Medicine, New York
5. Steven and Alexandra Cohen Veterans Center for the Study of Posttraumatic Stress and Traumatic Brain Injury, Department of Psychiatry, New York University Langone Medical Center, New York, New York