1. Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
2. Unité de la Tuberculose et des Mycobactéries, Institut Pasteur de Guadeloupe, Pointe-à-Pitre, Guadeloupe
3. National Health Laboratory Service, Groote Schuur Hospital, Cape Town, South Africa
4. Wellcome Trust Center for Research in Clinical Tropical Medicine, Imperial College, London, United Kingdom