1. Department of Epidemiology, University of Washington, Seattle
2. Department of Biostatistics, University of Washington, Seattle
3. Department of Global Health, University of Washington, Seattle
4. Department of Medicine, University of Washington, Seattle
5. Department of Pediatrics, University of Washington, Seattle
6. Departments of Obstetrics, Gynecology, and Reproductive Sciences, University of California, San Francisco
7. Department of Community Health, Jomo Kenyatta University of Agriculture and Technology, Nairobi
8. Center for Clinical Research, Kenya Medical Research Institute, Nairobi