1. Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, Michigan, USA
2. Robert Wood Johnson Health and Society Scholar, University of Michigan, Ann Arbor, Michigan, USA
3. Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan, USA
4. Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, USA
5. Channing Laboratory, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
6. Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, Michigan, USA
7. Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
8. Division of Program Evaluation and Biostatistics, Center for Evaluation Research and Surveys, National Institute of Public Health, Cuernavaca, Morelos, Mexico
9. Division of Environmental Health, Center for Population Health Research, National Institute of Public Health, Mexico City, Mexico
10. Ministry of Health, Mexico City, Mexico