Pandove, P. K.; Arora, N.; Garg, A.; Pandove, L.; Kumar, A. Intraperitoneal Instillation of Bupivacaine in Gallbladder Fossa and at Trocar Sites in Reduction of Postoperative Pain After Laparoscopic Cholecystectomy: A Prospective Randomized Controlled Double Blind Trial. Int Surg J 2017, 4, 1204-1208.