1. Centre for Environment and Health, University of Leuven (KU Leuven), Leuven, Belgium
2. Department of Internal Medicine, Spaarne Gasthuis, Haarlem and Hoofddorp, The Netherlands
3. Spaarne Gasthuis Academy, Haarlem and Hoofdorp, The Netherlands
4. Department of Paediatrics, Spaarne Gasthuis, Haarlem and Hoofddorp, The Netherlands
5. Leuven Child and Health Institute, University of Leuven (KU Leuven), Leuven, Belgium
6. Department of Development and Regeneration, University of Leuven (KU Leuven), Leuven, Belgium
7. Clinical Epidemiology Unit and Regional Reference Laboratory, University Hospital “P. Giaccone”, Palermo, Italy
8. Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G. D’Alessandro” (PROMISE), University of Palermo, Palermo, Italy
9. Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy
10. Department of Epidemiology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
11. IDEWE, External Service for Prevention and Protection at Work, Leuven, Belgium