1. Department of Dermatology Vrije Universiteit Brussel (VUB) Universitair Ziekenhuis Brussel (UZB) Jette Belgium
2. Department of Dermatology UZ Leuven Leuven Belgium
3. Department of Dermatology Hôpital Erasme, Université Libre de Bruxelles (ULB) Brussels Belgium
4. Department of Dermatology Institut Jules Bordet Brussels Belgium