1. Carolina Population Center Universitiy of North Carolina Chapel Hill
2. Department of Epidemiology University of North Carolina Chapel Hill
3. Department of Biostatistics University of North Carolina Chapel Hill
4. University of Witwatersrand Pretoria South Africa
5. Division of Reproductive Health National Center for Chronic Disease Prevention and Health Promotion Centers for Disease Control and Prevention Atlanta GA
6. UNC Project Lilongwe Malawi
7. Department of Medicine University of North Carolina Chapel Hill
8. College of Public Health Division of Epidemiology The Ohio State University Columbus OH
9. Health Services Branch Centers for Disease Control Malawi Lilongwe Malawi