1. Department of Global Health, University of Washington, Seattle, Washington.
2. Department of Epidemiology, University of Washington, Seattle, Washington.
3. Department of Medicine, University of Washington, Seattle, Washington.
4. Massachusetts General Hospital, Boston, Massachusetts.
5. School of Public Health, Jomo Kenyatta University of Agriculture and Technology, Juja, Kenya.
6. Center for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya.
7. Center for Clinical Research, Kenya Medical Research Institute, Nairobi, Kenya.
8. Kabwohe Clinical Research Center, Kabwohe, Uganda.
9. Infectious Disease Institute, Makerere University, Kampala, Uganda.