1 Department of Dermatology and Allergology, National Expertise Center for Atopic Dermatitis, University Medical Center Utrecht, Utrecht, The Netherlands.
2 Center for Translational Immunology, University Medical Center Utrecht, Utrecht, The Netherlands.
3 Department of Clinical Pharmacy, Division Laboratories, Pharmacy and Biomedical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands.
4 Department of Dermatology, Red Cross Hospital Beverwijk, Beverwijk, The Netherlands.