1. HIV and TB Diseases Research Directorate, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
2. TB Centre and Department of Immunology and Infection, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, United Kingdom
3. Department of Infectious Diseases, Leiden University Medical Center, Leiden
4. Center for Immunology of Infectious Diseases and Vaccines, National Institute for Public Health and the Environment, Bilthoven, the Netherlands