1. Department of Psychiatry, University of California San Diego, La Jolla
2. Herbert Wertheim School of Public Health, University of California San Diego, La Jolla
3. Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts
4. Walter Reed Army Institute of Research, Silver Spring, Maryland
5. Center for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University of the Health Sciences, Bethesda, Maryland
6. Psychiatry Service, Veterans Affairs San Diego Healthcare System, San Diego, California