1. Department of Dermatology, Erasmus MC University Medical Centre Rotterdam The Netherlands
2. Center of Pediatric Dermatology‐Department of Dermatology, Erasmus MC University Medical Centre Rotterdam The Netherlands
3. Department of Immunology, Laboratory Medical Immunology, Erasmus MC University Medical Centre Rotterdam The Netherlands
4. Department of Viroscience, Erasmus MC University Medical Centre Rotterdam The Netherlands
5. Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland