Maqsood, S.; Shan Khan, R. A.; Arshad, A. COMPARISON OF PREEMPTIVE GABAPENTIN WITH PREGABALIN FOR RELIEF OF POSTOPERATIVE PAIN IN PATIENTS UNDERGOING CHOLECYSTECTOMY: Comparison of Preemptive Gabapentin With Pregabalin in Cholecystectomy. Pak Armed Forces Med J 2017, 67 (5), 843-46.