1. Center for Health Systems Research, National Institute of Public Health, Cuernavaca, Mexico
2. International Organization for Migration, Mexico City, Mexico
3. National Laboratory of Sustainability Sciences, Institute of Ecology, National Autonomous University of Mexico, Mexico City, Mexico
4. Center for Infectious Diseases Research, National Institute of Public Health, Cuernavaca, Mexico
5. School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, Ottawa, Canada