Published on in Vol 4 , No 4 (2016) :Oct-Dec

1 Gillings School of Global Public Health, Department of Health Behavior, The University of North Carolina at Chapel Hill, Chapel Hill, NC, US
2 International Health Division, Abt Associates, Bethesda, MD, US
3 Gillings School of Global Public Health, Department of Health Policy and Management, The University of North Carolina at Chapel Hill, Chapel Hill, NC, US
*all authors contributed equally