1. Department of Psychiatry & Behavioral Sciences, University of Washington, Seattle, Washington;
2. Center for the Study of Health & Risk Behaviors, University of Washington, Seattle, Washington;
3. Department of Psychology, University of Houston, Houston, Texas;
4. Center of Excellence in Substance Abuse Treatment and Education, VA Puget Sound Health Care System, Seattle, Washington;
5. Mental Illness Research Education and Clinical Center, VA Puget Sound Health Care System, Seattle, Washington