S. S. Chatha, A. Q. Ghuman, M. Farooq, and M. Ahmad, “EVALUATION OF SINGLE PREOPERATIVE DOSE OF PREGABALIN IN TERMS OF POSTOPERATIVE PAIN AFTER LAPAROSCOPIC CHOLECYSTECTOMY: Single Preoperative Dose of Pregabalin”, PAFMJ, vol. 68, no. 5, pp. 1358–61, Oct. 2018.