1. Department of Dermatology Ghent University Hospital Gent Belgium
2. Department of Dermatology University Hospital Antwerp Antwerp Belgium
3. Private Practice Tournai Belgium
4. Department of Dermatology Centre Hospitalier Universitaire du Sart Tilman Liège Belgium
5. Department of Dermatology University Hospital Leuven Leuven Belgium
6. Private Practice Brasschaat Belgium
7. Department of Dermatology, Erasme Medical Center Université Libre de Bruxelles Brussels Belgium
8. Private Practice Ottignies Belgium
9. Dermatologie Maldegem Maldegem Belgium
10. Department of Dermatology University Hospital Brussel, Vrije Universiteit Brussel Brussels Belgium