1. US Department of Veterans Affairs Health Services Research & Development Los Angeles California USA
2. Department of Psychiatry and Biobehavioral Sciences David Geffen School of Medicine, University of California Los Angeles California USA
3. US Department of Veterans Affairs National Center for PTSD Dissemination and Training Division Palo Alto California USA
4. Department of Psychiatry and Behavioral Sciences Stanford University Palo Alto California USA
5. US Department of Veterans Affairs Center of Excellence for Stress and Mental Health San Diego California USA
6. Department of Psychiatry University of California San Diego California USA