1 Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania; Regional Institute of Gastroenterology and Hepatology, Cluj-Napoca, Romania.
2 Regional Institute of Gastroenterology and Hepatology, Cluj-Napoca, Romania.
3 Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania; Oncological Institute, Cluj-Napoca, Romania.