1. Associate professor in the Department of Social Medicine and the Center for Bioethics at the University of North Carolina at Chapel Hill
2. Postdoctoral researcher in the Department of Social Medicine and the Institute for Global Health and Infectious Diseases at the University of North Carolina at Chapel Hill
3. Postdoctoral researcher in the Department of Social Medicine and Institute for Global Health and Infectious Diseases at the University of North Carolina at Chapel Hill
4. Postdoctoral researcher in the Department of Social Medicine and the Institute for Global Health and Infectious Diseases at the University of North Carolina at Chapel Hill and an associate research scientist at Pacific Institute for Research and Evaluation
5. Research scientist at the Pacific Institute for Research and Evaluation
6. Associate professor at the Institute for Global Health and Infectious Diseases at the University of North Carolina at Chapel Hill
7. Professor in the Department of Social Medicine at the University of North Carolina at Chapel Hill