1. Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
2. Center for AIDS Research, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
3. Gillings School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
4. Department of Sociology, Center on Drug & Alcohol Research, Center for Health Equity Transformation, University of Kentucky, Lexington, KY, USA
5. Department of Population Health Sciences, Duke University, Durham, NC, USA