1. Department of Psychology, Harvard University, Cambridge, Massachusetts
2. Departments of Psychiatry and of Family and Preventive Medicine, University of California, San Diego, La Jolla3VA San Diego Healthcare System, San Diego, California
3. Institute for Social Research, University of Michigan, Ann Arbor
4. Center for the Study of Traumatic Stress, Department of Psychiatry, Uniformed Services University of the Health Sciences, Bethesda, Maryland
5. National Institute of Mental Health, Bethesda, Maryland
6. Department of Health Care Policy, Harvard Medical School, Boston