[1] BP Koirala Inst Hlth Sci, Dept Surg, Div Surg Gastroenterol, Dharan, Nepal
[2] Command Hosp Cent Command, Dept Gastrointestinal Surg, Lucknow, Uttar Pradesh, India
[3] Command Hosp Southern Command, Dept Gastrointestinal Surg, Pune, Maharashtra, India