1. Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, Bloomsbury, London, UK;
2. Faculty of Health Sciences, Universidad Anáhuac México, Huixquilucan, Mexico State 52786, Mexico
3. Faculty of Health Sciences, Universidad Anáhuac México, Huixquilucan, Mexico State, Mexico
4. Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, Bloomsbury, London, UK, Global Health Chapter, Mexican Society of Public Health, Miguel Hidalgo, Mexico City, Mexico