1 Chair of Dermatology, Sexually Transmitted Diseases and Immunodermatology, Faculty of Medicine in Bydgoszcz, Nicolaus Copernicus University in Torun, Poland.
2 Department of Principles of Clinical Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Poland.
3 Department of Dermatology and Venereology, Grodno State Medical University, Grodno, Belarus.