1. 1st Department of Dermatology and Venereology, Medical School, National and Kapodistrian University of Athens, Andreas Syggros Hospital, 11528 Athens, Greece
2. 2nd Department of Dermatology and Venereology, Medical School, National and Kapodistrian University of Athens, Attikon University Hospital, Allergy Unit, 12461 Athens, Greece
3. 1st Department of Dermatology and Venereology, Medical School, Aristotle University, 54124 Thessaloniki, Greece