1. 1st Department of Dermatology—Venereology, Hospital of Skin and Venereal Diseases Aristotle University of Thessaloniki Thessaloniki Greece
2. Institute of Dermatology Santa Maria della Misericordia University Hospital Udine Italy
3. 2nd Department of Dermatology—Venereology, Papageorgiou General Hospital Aristotle University of Thessaloniki Thessaloniki Greece