1 Department of Dermatology, University of Athens School of Medicine, Andreas Sygros Hospital for Skin and Venereal Diseases, 5 I. Dragoumi Street, Athens, 161 21,, Greece.
2 Department of Dermatology, University of Athens School of Medicine, Andreas Sygros Hospital for Skin and Venereal Diseases, 5 I. Dragoumi Street, Athens, 161 21,, Greece. alstrat@hol.gr.