1. Central American Institute for Studies on Toxic Substances (IRET), Universidad Nacional, Heredia, Costa Rica
2. Center for Environmental Research and Children's Health (CERCH), School of Public Health, University of California at Berkeley, Berkeley, California, USA
3. Environmental Health Department, National Institute of Public Health, Mexico City, Mexico
4. Division of Research in Community Interventions, National Institute of Perinatology, Mexico City, Mexico
5. Department of Microbiology and Environmental Toxicology, University of California at Santa Cruz, Santa Cruz, California, USA
6. Faculty of Pharmacy, Federal University of Bahia, Bahia, Brazil
7. Centre for Interdisciplinary Research Centre on Health, Well-being, Society and Environment (CINBIOSE), University of Quebec in Montreal, Montreal, Quebec, Canada
8. Division of Occupational and Environmental Medicine, Institute of Laboratory Medicine, Lund University, Lund, Sweden