1. Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg Dessau Germany
2. Department of Dermatology Jagiellonian University Medical College Krakow Poland
3. Department of Skin and Venereal Diseases, Lithuanian University of Health Sciences (LUHS) Hospital of LUHS Kauno Klinikos Kaunas Lithuania