1. Department of Dermatology University Hospital Leuven Leuven Belgium
2. Abbvie SA/NV Wavre Belgium
3. Department of Dermatology, Erasme Hospital Université Libre de Bruxelles Brussels Belgium
4. Private Practice Antwerp Belgium
5. Private Practice Thuin Belgium
6. Department of Dermatology, Cliniques Saint‐Luc Université Catholique de Louvain Brussels Belgium
7. Department of Dermatology Ghent University Hospital Ghent Belgium