1. Department of Surgery, Regional Institute of Gastroenterology and Hepatology “Prof. Dr. Octavian Fodor”, Cluj- Napoca, Romania
2. Department of Anesthesiology and Intensive Care Medicine, Regional Institute of Gastroenterology and Hepatology “Prof. Dr. Octavian Fodor”, Cluj-Napoca, Romania
3. University of Medicine and Pharmacy “Iuliu Hatieganu”, Cluj-Napoca, Romania