Khatri, A. M., A. P. Dawani, D. P. Gazder, A. H. Jaffery, and W. H. Wasty. “INTRA-PERITONEAL BUPIVACAINE INSTILLATION SIGNIFICANTLY REDUCES PAIN FOLLOWING LAPAROSCOPIC CHOLECYSTECTOMY”. Pakistan Journal of Medicine and Dentistry, vol. 7, no. 2, Apr. 2019, p. 6, http://ojs.zu.edu.pk/ojs/index.php/pjmd/article/view/175.