Pathak, A., A. Ranjan, A. Kumar, and I. S. Thakur. “Experience of Laparoscopic Cholecystectomy in Patients Presenting With Acute Cholecystitis at Different Duration”. International Journal of Research in Medical Sciences, vol. 11, no. 1, Dec. 2022, pp. 172-8, doi:10.18203/2320-6012.ijrms20223632.