1. Department of Dermatology & Allergology; Wilhelmina Children's Hospital; University Medical Center Utrecht; Utrecht The Netherlands
2. Department of Medical Psychology; Wilhelmina Children's Hospital; University Medical Center Utrecht; Utrecht The Netherlands
3. Julius Center for Health Sciences and Primary Care; University Medical Center Utrecht; Utrecht The Netherlands
4. TNO Prevention and Health; Leiden The Netherlands
5. Pediatric Dermatology; Erasmus Medical Center; Rotterdam The Netherlands