1 From the Metabolic Diseases Research Unit, National Institute for Medical Sciences and Nutrition Salvador Zubiran, Mexico City, Mexico; Tecnologico de Monterrey, School of Medicine, Mexico City, Mexico.
2 From the Metabolic Diseases Research Unit, National Institute for Medical Sciences and Nutrition Salvador Zubiran, Mexico City, Mexico; National Autonomous University of Mexico, School of Medicine, Mexico City, Mexico.
3 Harvard Medical School, Boston, MA.
4 Citizen Science Foundation, Las Vegas, NV.
5 Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, MN.
6 Harvard T. H. Chan School of Public Health, Boston, MA.
7 Harvard Medical School, Boston, MA; Harvard T. H. Chan School of Public Health, Boston, MA; New Balance Foundation Obesity Prevention Center, Boston Children's Hospital, MA. Electronic address: david.ludwig@childrens.harvard.edu.