1. Center for Nutrition, Prevention, and Health Services; National Institute for Public Health and the Environment; Bilthoven The Netherlands
2. Julius Center for Health Sciences and Primary Care; University Medical Center Utrecht; Utrecht The Netherlands
3. Division of Environmental Epidemiology; Institute for Risk Assessment Sciences; Utrecht University; Utrecht The Netherlands
4. Department of Pediatric Pulmonology and Pediatric Allergology; UMCG, GRIAC Research Institute; Beatrix Children's Hospital; University of Groningen; Groningen the Netherlands
5. Department of Pediatrics; Erasmus University Medical Center; Sophia Children's Hospital; Rotterdam The Netherlands
6. Department of Epidemiology UMCG, GRIAC Research Institute; University of Groningen; Groningen The Netherlands