[1] Univ Calif San Francisco, PTSD Program 116 P, San Francisco VA Med Ctr, San Francisco, CA 94143 USA
[2] Boston Univ, Sch Med, Natl Ctr PTSD,Massachusetts Vet Epidemiol Res & I, Dept Vet Affairs Boston Healthcare Syst, Boston, MA 02215 USA
[3] Univ Calif San Francisco, Dept Psychiat, San Francisco, CA 94143 USA
[4] Univ Calif San Francisco, Dept Med, San Francisco, CA 94143 USA
[5] Boston Univ, Sch Med, Dept Psychiat, Boston, MA 02118 USA