1. ISGlobal, Center for Research in Environmental Epidemiology, Barcelona, Spain
2. Consorcio de Investigación Biomédica de Epidemiología y Salud Pública, Spain
3. Universitat Pompeu Fabra, Barcelona, Spain
4. Department of Preventive Medicine and Public Health, University of Valencia, Valencia, Spain
5. Center for Research in Occupational Health, Barcelona, Spain
6. Norwegian Institute of Public Health, Oslo, Norway
7. Department of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Porto, Portugal
8. Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
9. Department of Occupational and Environmental Medicine, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark
10. Department of Public Health, Erasmus University Medical Center, Rotterdam, the Netherlands
11. National Institute of Health and Medical Research, InsermU1085 – Irset, University of Rennes, Rennes, France
12. Department of Environmental Science, Vytautas Magnus University, Kaunas, Lithuania
13. Instituto de Investigación Biosanitaria ibs.Granada, University of Granada, Granada, Spain
14. Department of Environmental Epidemiology, Nofer Institute of Occupational Medicine, Lodz, Poland
15. The Generation R Study Group, Department of Epidemiology, Department of Pediatrics, Erasmus University Medical Center, Rotterdam, the Netherlands
16. Hospital Del Mar Medical Research Institute, Barcelona, Spain
17. National School of Public Health, Athens, Greece
18. Sachs’ Children’s Hospital, Södersjukhuset, Stockholm, Sweden
19. Department of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden
20. Faculty of Medicine, University of the Basque Country, Leioa, Basque Country, Spain
21. BioDonostia Health Research Institute, San Sebastian, Basque Country, Spain
22. Department of Social Medicine, Faculty of Medicine, University of Crete, University Hospital of Heraklion, Crete, Greece
23. Department of Public Health, University of Copenhagen, Copenhagen, Denmark
24. Meyer Children’s University Hospital, Florence, Italy
25. Department of Health, Government of the Basque Country, San Sebastian, Spain
26. Department of Public Health, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
27. Cancer Epidemiology Unit, Department of Medical Sciences, University of Turin, Turin, Italy