1. Department of Dermatology and Allergology University Medical Centre Utrecht Utrecht The Netherlands
2. Department of Pediatrics OLVG Amsterdam Amsterdam The Netherlands
3. Department of Pediatric Psychology and Social Work, Wilhelmina Children's Hospital University Medical Center Utrecht Utrecht The Netherlands
4. Julius Center for Health Sciences and Primary Care University Medical Center Utrecht Utrecht The Netherlands
5. Human Nutrition Wageningen University & Research (WUR) Wageningen The Netherlands
6. Department of Pediatric Dermatology, Sophia Children's Hospital Erasmus University Medical Centre Rotterdam The Netherlands