1. Department of Dermatology; Stirling Community Hospital; Stirling UK
2. Department of Dermatology; Bispebjerg Hospital; University of Copenhagen; Copenhagen Denmark
3. Department of Dermatology and Allergology; Klinikum Vest GmbH Academic Teaching Hospital; Recklinghausen Germany
4. Department of Dermatology; Hospital San Jorge; Huesca Spain
5. Département de Dermatologie; Hôpital Saint-Louis; Paris France
6. First Dermatology Department; Aristotle University; Thessaloniki Greece
7. Unit of Dermatology; Department of Medicine; University of Padova; Padova Italy
8. Department of Dermatology; Inselspital; University of Bern; Bern Switzerland
9. Department of Dermatology; Vrije Universiteit Brussel (VUB); Universitair Ziekenhuis UZ Brussel; Brussels Belgium
10. Department of Dermatology and Venereology; Medical University, Innsbruck; Innsbruck Austria
11. Dermatology; Bern Im Holenacker 16 CH-3063 Ittigen Switzerland