1. School of Public Health of Mexico National Institute of Public Health Cuernavaca Mexico
2. Department of Perinatal Health National Institute of Public Health Cuernavaca Mexico
3. Center for Population Health Research National Institute of Public Health Cuernavaca Mexico
4. Center for Infectious Disease Research National Institute of Public Health Cuernavaca Mexico
5. Epidemiologic Surveillance Mexican Institute of Social Security‐Bienestar Mexico City Mexico
6. Department of Developmental Neurobiology National Institute of Perinatology Mexico City Mexico
7. Nutritional Sciences Department, School of Public Health University of Michigan Ann Arbor Michigan USA
8. Center for Research in Nutrition and Health National Institute of Public Health Cuernavaca Mexico