1. Department of Microbiology, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
2. Regional Institute of Gastroenterology and Hepatology, 400162 Cluj-Napoca, Romania
3. Department of Gastroenterology, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania