1. Department of Dermatology and Venereology Medical University of Bialystok 15‐540 Bialystok, Zurawia 14 St Poland
2. Department of PhysiologyMedical University of Bialystok 15‐222 Bialystok, Mickiewicza 2C St Poland
3. Department of Infectious Diseases and Hepatology Medical University of Bialystok 15‐540 Bialystok, Zurawia 14 St Poland