1. Center for Research in Therapeutic Sciences, Strathmore University, Nairobi, Kenya.
2. Institute of Tropical Medicine and Infectious Diseases, Nairobi, Kenya.
3. African Center for Clinical Trials, Nairobi, Kenya.
4. Kenya Medical Research Institute, Nairobi, Kenya.
5. Kenyatta University, Nairobi, Kenya.
6. Immunology and Infectious Disease Department, Harvard School of Public Health, Boston, Massachusetts.