1. Department of Gastroenterology, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
2. Institute of Gastroenterology, “St. Spiridon” University Hospital, 700111 Iasi, Romania
3. Department of Surgery, Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
4. Department of Surgery, “St. Spiridon” University Hospital, 700111 Iasi, Romania