1 Centre of Dermatovenereology, Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania.
2 Clinic of Infectious Diseases and Dermatovenereology, Faculty of Medicine, Vilnius University, Vilnius, Lithuania.
3 Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Brandenburg Medical School Theodore Fontane, Dessau, Germany.