1. Infectious Diseases Research Collaboration, Kampala, Uganda;
2. Department of Medicine, Makerere University, Kampala, Uganda;
3. Uganda National Health Laboratory Services, Kampala, Uganda;
4. Pilgrim Africa, Kampala, Uganda;
5. Medical Research Council Unit, Banjul, The Gambia;
6. Makerere University-John Hopkins University Collaboration, Kampala, Uganda;
7. Department of Medicine, University of California San Francisco, San Francisco, California;
8. Department of Medicine, Stanford University, Stanford, California