1. Department of Health Policy and Management, University of North Carolina-Chapel Hill, Chapel Hill, NC, USA
2. Division of Infectious Diseases, University of North Carolina-Chapel Hill, Chapel Hill, NC, USA
3. Division of Global Women’s Health, University of North Carolina-Chapel Hill, Chapel Hill, NC, USA
4. UNC Project, Lilongwe, Malawi
5. Department of Epidemiology, University of North Carolina-Chapel Hill, Chapel Hill, NC, USA
6. Department of Social Medicine, University of North Carolina-Chapel Hill, Chapel Hill, NC, USA