1. 1st Department of Dermatology and Venereology Andreas Syggros Hospital University of Athens Athens Greece
2. Departments of Dermatology, Venereology, Allergology and Immunology Dessau Medical Center Brandenburg Medical School Theodor Fontane Dessau Germany
3. Faculty of Health Sciences Brandenburg Dessau Germany
4. Department of Medical Sciences O.U. of Dermatology – Azienda Ospedaliero – University of Ferrara Ferrara Italy