1. Substance Use, Gender, and Applied Research Program, RTI International Research Triangle Park North Carolina USA
2. Gillings School of Global Public Health University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
3. Alcohol, Tobacco and Other Drug Research Unit South African Medical Research Council Tygerberg South Africa
4. Department of Psychiatry and Mental Health University of Cape Town Rondebosch Cape Town South Africa
5. Department of Psychology North Carolina State University Raleigh North Carolina USA
6. Psychiatry and Behavioral Sciences Duke University School of Medicine Durham North Carolina USA