1. Global Tuberculosis Programme, World Health Organization, Geneva, Global Health, Global Studies Institute, Université de Genève, Geneva, Switzerland
2. Global Tuberculosis Programme, World Health Organization, Geneva
3. Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
4. The Central Clinical School, The Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW, Australia