Gupta, Atul Kumar, Nitin Shiwach, Sonisha Gupta, Shalabh Gupta, Apoorv Goel, and Tripta S. Bhagat. 2018. “Predicting Difficult Laparoscopic Cholecystectomy”. International Surgery Journal 5 (3):1094-99. https://doi.org/10.18203/2349-2902.isj20180837.