1. University College London, London, UK.
2. School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru.
3. Department of Clinical and Biological Sciences, University of Turin, Turin, Italy.
4. TB Centre, London School of Hygiene & Tropical Medicine, London, UK.
5. Laboratorio de Investigación de Enfermedades Infecciosas, Universidad Peruana Cayetano Heredia, Lima, Peru.