Santharaj, Swathi, and Sudhir Marahanumaiah. “Pre-Operative Predictors of Difficult Laparoscopic Cholecystectomy: a Comparative Study Between Two Scoring Systems”. International Surgery Journal 9, no. 5 (April 26, 2022): 960–966. Accessed November 10, 2025. https://www.ijsurgery.com/index.php/isj/article/view/8748.