[1] VA Natl Ctr PTSD, Boston, MA 02130 USA
[2] VA Boston Healthcare Syst, 150 S Huntington Ave 116B-2, Boston, MA 02130 USA
[3] Boston Univ, Sch Med, Dept Psychiat, Boston, MA 02118 USA
[4] New England Geriatr Res Educ & Clin Ctr, Boston, MA USA
[5] Harvard Med Sch, Dept Psychiat, Boston, MA 02115 USA
[6] Translat Res Ctr TBI & Stress Disorders, Boston, MA USA
[7] Nat Hosp & Palliat Care Org, Alexandria, VA USA