1. National Intrepid Center of Excellence, Walter Reed National Military Medical Center, Bethesda, MD, USA
2. Uniformed Services University of the Health Sciences, Bethesda, MD, USA
3. Traumatic Brain Injury Center of Excellence, Bethesda, MD, USA
4. Naval Hospital Camp Pendleton, Oceanside, CA, USA
5. General Dynamics Information Technology, Fairfax, VA, USA
6. Department of Psychiatry, University of British Columbia, Vancouver, BC, Canada