Ansari, S. T., K. S. Bedi, and S. K. Sahu. “Intraoperative Scoring System for Grading Severity of Cholecystitis at Laparoscopic Cholecystectomy”. International Surgery Journal, vol. 9, no. 1, Dec. 2021, pp. 75-80, doi:10.18203/2349-2902.isj20215134.