1. Barcelona Institute for Global Health, Barcelona, Spain
2. Universitat Pompeu Fabra, Barcelona, Spain
3. Spanish Consortium for Research on Epidemiology and Public Health, Madrid, Spain
4. Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, València, Spain
5. Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, Netherlands
6. Biodonostia, Environmental Epidemiology and Child Development Group, Donostia-San Sebastian, Spain
7. Preventive Medicine and Public Health Department, University of the Basque Country, Bizkaia, Spain
8. Faculty of Nursing and Chiropody, University of Valencia, Valencia, Spain
9. Public Health Division of Gipuzkoa, Basque Government, San Sebastian, Spain
10. Hospital de Mar Medical Research Institute, Barcelona, Spain