1. Department of Infectious Diseases and Hepatology, Medical University of Białystok, Białystok, Poland
2. Department of Pediatrics, Gastroenterology, Hepatology, Nutrition and Allergology, Medical University of Bialystok, Bialystok, Poland
3. Department of Environmental Medicine, Poznan University of Medical Sciences, Poznań, Poland
4. Integrated Science Association (ISA), Universal Scientific Education and Research Network (USERN), Poznań, Poland
5. Department of Infectious Diseases and Allergology, Jan Kochanowski University, Kielce, Poland