1. Columbia School of Social Work, Columbia University College of Physicians and Surgeons, New York, New York2Department of Psychiatry, Columbia University College of Physicians and Surgeons, New York, New York
2. Department of Psychiatry, Western Psychiatric Institute and Clinic, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
3. Center for Anxiety and Traumatic Stress Disorders, Massachusetts General Hospital, Boston5Harvard Medical School, Boston, Massachusetts
4. Department of Psychiatry, University of California, San Diego7Veterans Affairs San Diego Healthcare System, La Jolla, California8Veterans Medical and Research Foundation, La Jolla, California
5. Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, New York
6. Division of Biostatistics, Department of Psychiatry, Columbia University College of Physicians and Surgeons, New York, New York
7. Department of Psychiatry, University of California, San Diego
8. Columbia School of Social Work, Columbia University College of Physicians and Surgeons, New York, New York