1. Department of Allergology, Clinical Immunology and Internal Medicine, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, ul. Ujejskiego 75, 85168 Bydgoszcz, Poland
2. Department of Infectious Diseases and Hepatology, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, ul. Świętego Floriana 12, 85030 Bydgoszcz, Poland