1. Facultad de Medicina Alberto Hurtado, Universidad Peruana Cayetano Heredia, Avenida Honorio Delgado s/n San Martín de Porres, Lima, Peru
2. Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
3. Departamento de Enfermedades Infecciosas, Tropicales y Dermatológicas. Hospital Nacional Cayetano Heredia, Lima, Peru
4. Servicio de Urología, Hospital Nacional Cayetano Heredia, Lima, Peru
5. Department of Clinical Research, London School of Hygiene and Tropical Medicine, London, UK
6. Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, USA