1. Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
2. University of Michigan School of Public Health, Ann Arbor, Michigan, USA
3. Indiana University School of Dentistry, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana, USA
4. Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, Quebec, Canada
5. Center for Human Growth and Development, University of Michigan, Ann Arbor, Michigan, USA
6. Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
7. Icahn School of Medicine at Mount Sinai, New York, New York, USA
8. Instituto Nacional de Perinatología, Mexico City, Mexico
9. Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico