Das, Tamoghna, Arijit Roy, and Anindita Bhar. 2022. “Effect of Intra-Peritoneal Instillation of Bupivacaine in Laparoscopic Cholecystectomy”. International Journal of Clinical Trials 10 (1):21-25. https://doi.org/10.18203/2349-3259.ijct20223335.