1. Department of Chronic Disease Epidemiology, School of Public Health, Yale University, New Haven, Connecticut, USA
2. Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, USA
3. Channing Laboratory, Department of Medicine, Brigham and Women’s Hospital, Boston, Massachusetts, USA
4. Department of Biology and Environmental Toxicology, University of California, Santa Cruz, Santa Cruz, California, USA
5. Division of Statistics, Center for Evaluation Research and Surveys, National Institute of Public Health, Cuernavaca, Morelos, México
6. Office of the Director, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
7. Office of the Director, National Institute of Public Health, Cuernavaca, Morelos, México