1. Gastroenterology Department, “Sfanta Maria” Hospital, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
2. Gastroenterology Department, “Sfanta Maria” Hospital, 011172 Bucharest, Romania
3. Center for Digestive Disease and Liver Transplantation, Fundeni Clinical Institute, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania