Narendra Pandit1, Laligen Awale2, Shailesh Adhikary2. 1. Division of Surgical Gastroenterology, Department of Surgery, B P Koirala Institute of Health Sciences (BPKIHS), Dharan, Nepal. narendrapandit111@gmail.com. 2. Division of Surgical Gastroenterology, Department of Surgery, B P Koirala Institute of Health Sciences (BPKIHS), Dharan, Nepal.