1. National Intrepid Center of Excellence, Walter Reed National Military Medical Center, Bethesda, Maryland, USA.
2. School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA.
3. Traumatic Brain Injury Center of Excellence, Silver Spring, Maryland, USA.
4. Contractor, in support of the Traumatic Brain Injury Center of Excellence, Silver Spring, Maryland, USA.
5. Department of Psychiatry, University of British Columbia, Vancouver, British Columbia, Canada.