1. Department of Dermatology Cliniques universitaires Saint‐Luc, Université catholique de Louvain (UCLouvain) Brussels Belgium
2. Institute of Experimental and Clinical Research, Pneumology, ENT and Dermatology Pole Université catholique de Louvain (UCLouvain) Brussels Belgium
3. Department of Dermatology University Hospital Antwerp (UZA), and Infla‐Med Centre of Excellence, Research Group Immunology, University of Antwerp Antwerp Belgium
4. Department of Dermatology Cliniques Saint‐Pierre, and Private Dermatologist Brussels Belgium
5. Department of Dermatology Cliniques Saint‐Pierre Brussels Belgium
6. Department of Dermatology University Hospitals Leuven Leuven Belgium
7. Department of Microbiology Immunology and Transplantation, Allergy and Clinical Immunology Research Group KU Leuven, Leuven Belgium