1 1st Department of Dermatology, "Andreas Syggros" Hospital for Skin Diseases, National & Kapodistrian University of Athens, Medical School, Athens, Greece.
2 Department of Hygiene, Epidemiology and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens, Greece.
3 Hematopathology Department, "Evangelismos" General Hospital, Athens, Greece.
4 2nd Department of Dermatology, "Attikon" General Hospital, National & Kapodistrian University of Athens, Medical School, Athens, Greece.