1. U.S. Army Aeromedical Research Laboratory, Fort Rucker, Alabama; National Intrepid Center of Excellence, Walter Reed National Military Medical Center, Bethesda, Maryland.
2. Division of Physical Medicine and Rehabilitation, University of British Columbia and GF Strong Rehab Centre, Vancouver, British Columbia, Canada.
3. Department of Physical Medicine and Rehabilitation, Harvard Medical School and Red Sox Foundation and Massachusetts General Hospital Home Base Program, Boston, Massachusetts; Defense and Veterans Brain Injury Center, Bethesda, Maryland.