S. A. KHAN, K. BUTT, Z. A. CHAHDHRY, and S. M. A, “Experience with 0.5% Bupivacaine Pro-Peritoneal Bleb. After Laparoscopic Cholecystectomy—A New Trend in Analgesia”, Annals KEMU, vol. 6, no. 4, Feb. 2018.