Khedkar I, Prasad D, Datta A. Diagnostic value of upper gastrointestinal endoscopy prior to elective laparoscopic cholecystectomy for symptomatic cholelithiasis. Int Surg J [Internet]. 2017 Dec. 26 [cited 2025 Nov. 10];5(1):105-9. Available from: https://www.ijsurgery.com/index.php/isj/article/view/2333