1 School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru, TB Centre, London School of Hygiene & Tropical Medicine, London, UK, Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru.
2 School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru.
3 TB Centre, London School of Hygiene & Tropical Medicine, London, UK.
4 School of Medicine, Universidad Peruana Cayetano Heredia, Lima, Peru, TB Centre, London School of Hygiene & Tropical Medicine, London, UK.