1. Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
2. Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
3. Centre for Epidemiology, Institute of Population Health, Manchester Academic Health Sciences Centre, The University of Manchester, Manchester, United Kingdom
4. Institute of Inflammation and Repair, Manchester Academic Health Science Centre, The University of Manchester and University Hospital of South Manchester NHS Foundation Trust, Manchester, United Kingdom
5. Institute of Epidemiology II, Helmholtz Zentrum, München, German Research Centre for Environmental Health, Neuherberg, Germany
6. Environment Science Center, The University of Augsburg, Augsburg, Germany
7. Institute of Epidemiology I, Helmholtz Zentrum, München, German Research Centre for Environmental Health, Neuherberg, Germany
8. IUF-Leibniz Research Institute for Environmental Medicine at the University of Düsseldorf, Düsseldorf, Germany
9. Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
10. Department of Pediatrics, Division of Respiratory Medicine, Erasmus University Medical Center/Sophia Children’s Hospital, Rotterdam, the Netherlands
11. Department of Epidemiology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
12. Department of Medical Sciences, Uppsala University, Uppsala, Sweden
13. Department of Pediatrics, Research Institute, Marien Hospital Wesel, Wesel, Germany
14. Center for Nutrition, Prevention and Health Services, National Institute of Public Health and the Environment, Bilthoven, the Netherlands
15. Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, the Netherlands