1. Department of Psychology, University of Minnesota, Minneapolis, MN, USA
2. Department of Counseling and School Psychology, University of Massachusetts Boston, Boston, MA, USA
3. Department of Sociology, Hunter College, New York, NY, USA
4. Department of Psychiatry, Division on Substance Use Disorders, New York State Psychiatric Institute, Columbia University Irving Medical Center, New York, NY, USA
5. Department of Psychiatry, HIV Center for Clinical and Behavioral Studies at New York State Psychiatric Institute and Columbia University, New York, NY, USA
6. Department of Epidemiology, Columbia University Mailman School of Public Health, New York, NY, USA