1. Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
2. University of Washington, Global Health, Seattle, WA, United States
3. Kenya Medical Research Institute, Center for Clinical Research, Nairobi, Kenya
4. Partners in Health Research and Development, Thika, Kenya
5. University of Washington, Seattle, WA, United States
6. University of Washington, Epidemiology, Seattle, WA, United States
7. University of Washington, Medicine, Seattle, WA, United States