Bansod, A. N., I. G. Patil, N. S. Awachar, R. K. Umalkar, A. M. Wankhede, and V. K. Jadhav. “A Study of Preoperative Factors Predicting a Difficult Laparoscopic Cholecystectomy”. International Surgery Journal, vol. 9, no. 5, Apr. 2022, pp. 972-6, doi:10.18203/2349-2902.isj20221141.