1. Department of Skin and Venereal Diseases Faculty of Medicine School of Health Sciences University of Ioannina Ioannina Greece
2. Department of Dermatology Zealand University Hospital Roskilde Denmark
3. Delc Clinic Biel/Bienne Switzerland
4. Department of Dermatology Institute of Clinical Sciences The Sahlgrenska Academy at University of Gothenburg Gothenburg Sweden
5. Department of Clinical Medicine Health Sciences Faculty University of Copenhagen Copenhagen Denmark