1 2nd Department of Dermatology-Venereology, National and Kapodistrian University of Athens, Medical School, "Attikon" General University Hospital, Athens, Greece.
2 2nd Department of Dermatology-Venereology, National and Kapodistrian University of Athens, Medical School, "Attikon" General University Hospital, Athens, Greece, 1st Department of Dermatology-Venereology, National and Kapodistrian University of Athens, Medical School, "Andreas Syggros" Hospital for Cutaneous and Venereal Diseases, Athens, Greece.