“Effects of Port Site Bupivacaine Infiltration to Reduce Post Operative Pain in Laparoscopic Cholecystectomy: A Double Blind Randomized Controlled Trial”, J Chittagong Med Coll Teachers Ass, vol. 28, no. 2, pp. 64–68, Feb. 2018, doi: 10.3329/jcmcta.v28i2.62424.