1. Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan
2. Center for Research on Nutrition and Health, National Institute of Public Health, Cuernavaca, Mexico
3. Department of Neurology, Division of Sleep Medicine, Michigan Medicine, Ann Arbor, Michigan
4. Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan
5. Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, Michigan
6. Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, Michigan
7. Health Department, Universidad Iberoamericana, Mexico City, Mexico
8. Department of Anthropology, University of Michigan, Ann Arbor, Michigan