1. Department of Dermatology, Ghent University Hospital, Ghent, Belgium
2. Department of Dermatology, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
3. Department of Dermatology, Liège University Hospital, Liège, Belgium
4. Department of Dermatology, University Hospital Antwerp (UZA), Edegem, Belgium
5. Department of Dermatology, Grand Hôpital de Charleroi, Charleroi, Belgium
6. Department of Dermatology, AZ Delta campus Rembert Torhout, Torhout, Belgium
7. Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
8. Department of Dermatology, University Hospitals Leuven, Leuven, Belgium
9. Vrije Universiteit Brussel (VUB), Department of Dermatology, Universitair Ziekenhuis Brussel, Brussels, Belgium