[1] VA Boston Healthcare Syst, Natl Ctr PTSD, Boston, MA 02130 USA
[2] Boston Univ, Sch Med, Boston, MA 02215 USA
[3] Boston Univ, Sch Social Work, Boston, MA 02215 USA
[4] Univ Penn, Perelman Sch Med, Philadelphia, PA 19104 USA
[5] Univ Penn, Leonard Davis Inst Hlth Econ, Penn Implementat Sci Ctr, Philadelphia, PA 19104 USA