[1] Walter Reed Natl Mil Med Ctr, Bethesda, MD USA
[2] Def & Vet Brain Injury Ctr, Silver Spring, MD USA
[3] Natl Intrepid Ctr Excellence, Bethesda, MD USA
[4] Uniformed Serv Univ Hlth Sci, Bethesda, MD 20814 USA
[5] Ctr Neurosci & Regenerat Med, Bethesda, MD USA
[6] Univ British Columbia, Vancouver, BC, Canada