S. B. . Siraj, A. A. . Maruf, M. N. . Haq, F. . Yasmin, and M. A. . Rahaman, “Evaluation of Gabapentin on Postoperative Pain and Opioid Consumption Following Laparoscopic Cholecystectomy”, J Chittagong Med Coll Teachers Ass, vol. 24, no. 1, pp. 41–45, Sep. 2013.