1. RTI International, Research Triangle Park, NC, USA
2. Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
3. Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, NC, USA
4. Alcohol, Tobacco and Other Drug Research Unit, South African Medical Research Council, Cape Town, South Africa
5. Department of Psychiatry and Mental Health, University of Cape Town, Cape Town, South Africa
6. Curtin enAble Institute, Faculty of Health Sciences, Curtin University, Perth, Australia
7. RTI International, Nairobi, Kenya