1. Substance Use, Gender, and Applied Research Program, RTI International, Research Triangle Park, NC, USA
2. Substance Use, Gender, and Applied Research Program, RTI International, Washington, DC, USA
3. Gillings School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
4. Social Statistics Program, RTI International, Research Triangle Park, NC, USA
5. Psychology in the Public Interest, North Carolina State University, Raleigh, NC, USA
6. Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, NC, USA