Affiliation: | 1.Department of Infectious Diseases and Hepatology, Medical University of Białystok, 15-540 Białystok, Poland;2.Department of Infectious Diseases, Jan Kochanowski University, 25-317 Kielce, Poland;3.Department of Pediatrics, Gastroenterology, Hepatology, Nutrition and Allergology, Medical University of Bialystok, 15-247 Bialystok, Poland; |