[1] Postgrad Inst Med Educ & Res, Dept Gen Surg, Gastrointestinal Surg Unit, Chandigarh 160012, India
[2] Postgrad Inst Med Educ & Res, Dept Gastroenterol, Chandigarh 160012, India
[3] Postgrad Inst Med Educ & Res, Dept Histopathol, Chandigarh 160012, India
[4] Postgrad Inst Med Educ & Res, Dept Pediat Surg, Chandigarh 160012, India