1. School of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
2. Center for Research on Population Health, National Institute of Public Health, Mexico City, Mexico
3. Escuela de Medicina, Instituto Tecnológico de Estudios Superiores de Monterrey, Mexico
4. John A. Burns School of Medicine, University of Hawaii, Honolulu, HI
5. Department of Neurology and Psychiatry, National Institute of Medical Sciences and Nutrition Salvador Zubiran, México City, Mexico
6. Department of Maternal and Child's Health, Institute for Clinical Effectiveness and Health Policy, Buenos Aires, Argentina
7. Department of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA