[1] Uniformed Serv Univ Hlth Sci, Dept Neurol, Bethesda, MD 20814 USA
[2] Univ Pittsburgh, Sch Med, Dept Crit Care Med, Pittsburgh, PA USA
[3] Suny Downstate Med Ctr, Dept Physiol & Pharmacol, Brooklyn, NY 11203 USA
[4] Uniformed Serv Univ Hlth Sci, Dept Neurol, Rockville, MD USA
[5] Duke Univ, Med Ctr, Dept Psychiat & Behav Sci, Durham, NC USA
[6] Durham VA Med Ctr, Durham, NC USA
[7] Def & Vet Brain Injury Ctr, Silver Spring, MD USA
[8] Madigan Army Med Ctr, Dept Neurol, Tacoma, WA 98431 USA
[9] US Army Med Res & Mat Command, Ft Detrick, MD USA