Srikantaiah HC, Manjappa VB. Diagnostic value of pre-operative upper GI endoscopy in gall bladder stone patients undergoing elective laparoscopic cholecystectomy. Int Surg J [Internet]. 2019 Jul. 25 [cited 2025 Nov. 10];6(8):2949-54. Available from: https://www.ijsurgery.com/index.php/isj/article/view/4558