[1] VA Boston Healthcare Syst, Boston, MA USA
[2] Maastricht Univ, Sch Mental Hlth & Neurosci, Maastricht, Netherlands
[3] Univ Calif San Diego, San Diego, CA 92103 USA
[4] Boston Univ, Boston, MA 02215 USA
[5] Natl Ctr PTSD, Boston, MA USA
[6] Univ S Florida, Tampa, FL 33620 USA
[7] Emory Univ, Sch Med, Atlanta, GA 30322 USA