1. Center for Care Delivery and Outcomes Research, Minneapolis VA Health Care System, Minneapolis, Minnesota
2. Department of Medicine, University of Minnesota, Minneapolis
3. Department of Psychiatry and Behavioral Sciences, University of Minnesota, Minneapolis
4. National Center for Posttraumatic Stress Disorder, Dissemination and Training Division at the Veterans Affairs Palo Alto Health Care System, Palo Alto, California
5. Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford, California