1. Takemi Program in International Health, Harvard T.H. Chan School of Public Health, Boston, USA
2. Epidemiology Research Unit, National Institute of Cancer, Mexico City, Mexico
3. Center for Nutrition and Health Research, National Institute of Public Health (INSP), Cuernavaca, Mexico
4. Department of Perinatal Health, National Institute of Public Health (INSP), Cuernavaca, Mexico
5. Epidemiology Unit, Instituto de Investigaciones Biomédicas Universidad Nacional Autónoma de México and National Cancer Institute, Mexico City, Mexico
6. Center for Research on Population Health, National Institute of Public Health, Mexico City, Mexico
7. Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA