1. Department of Dermatology and Allergology, National Expertise Center for Atopic Dermatitis University Medical Center Utrecht Utrecht The Netherlands
2. Division Laboratories, Pharmacy and Biomedical Genetics, Center for Translational Immunology University Medical Center Utrecht Utrecht The Netherlands
3. Department of Immunopathology, Sanquin Research, and Landsteiner Laboratory, Academic Medical Center University of Amsterdam Amsterdam The Netherlands
4. Sanquin Diagnostic Services Sanquin Amsterdam The Netherlands
5. Department of Dermatology University Medical Center Groningen Groningen The Netherlands