1. Addictions, Drug & Alcohol Institute, Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, Washington.
2. Department of Psychology, University of Minnesota-Twin Cities, Minneapolis, Minnesota.
3. Division on Substance Use Disorders, Department of Psychiatry, Columbia University Irving Medical Center at New York State Psychiatric Institute, New York, New York.
4. HIV Center for Clinical and Behavioral Studies, Division of Gender, Sexuality, and Health, Department of Psychiatry, New York State Psychiatric Institute and Columbia University, New York, New York.