1. Department of Maternal and Child Health, Gillings School of Global Public Health, University of North Carolina at Chapel Hill.
2. MEASURE Evaluation Project, Carolina Population Center, University of North Carolina at Chapel Hill, Chapel Hill.
3. South Africa Department of Basic Education, Pretoria, South Africa.
4. United States Agency for International Development, Pretoria, South Africa.
5. School of Health Systems and Public Health, University of Pretoria, Pretoria, South Africa.