COMPARISON OF EFFECT OF MAGNESIUM SULPHATE AND PRESERVATIVE-FREE KETAMINE AS AN ADJUNCT TO EPIDURAL BUPIVACAINE FOR POSTOPERATIVE ANALGESIA IN ABDOMINAL HYSTERECTOMY Journal title: Journal of Evidence Based Medicine and Healthcare Authors: Radha Korumbil Raghavan, Ashtamoorthi Mylamkodath Kesavan, Fijul Komu Subject(s):