IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-9-4-24685 Original Research Paper A prospective comparative study of port site (epigastric vs umbilical) pain and infection following gall bladder extraction in patients of laparoscopic cholecystectomy Rathi Dr. Nitin Siwach Dr. April 2020 9 4 01 02