1. Edith Nourse Rogers Memorial Veterans Hospital, Bedford, MA, USA
2. University of Minnesota, Department of Psychiatry, Minneapolis, MN, USA
3. Minneapolis VA Health Care System, Minneapolis, MN, USA
4. Center for Chronic Disease Outcomes Research, Minneapolis VA Health Care System, Minneapolis, MN, USA
5. U.S. Department of Veterans Affairs National Center for PTSD, Menlo Park, CA, USA
6. Stanford University, Stanford, CA, USA
7. Palo Alto University, Palo Alto, CA, USA