1. Defense and Veterans Brain Injury Center, Walter Reed National Military Medical Center, Bethesda, MD, USA
2. National Intrepid Center of Excellence, Walter Reed National Military Medical Center, Bethesda, MD, USA
3. Department of Psychiatry, University of British Columbia, Vancouver, Canada
4. Contractor, Defense and Veterans Brain Injury Center, Silver Spring, MD, USA
5. Uniformed Services University of the Health Sciences, Bethesda, MD, USA
6. Defense and Veterans Brain Injury Center, Naval Hospital Camp Pendleton, CA, USA