1. Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK, Karonga Prevention Study, Chilumba, Malawi
2. Karonga Prevention Study, Chilumba, Malawi
3. Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK
4. Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK, National and Supranational Mycobacterium Reference Laboratory, Forschungszentrum Borstel, Germany