IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-1-33147 Original Research Paper A Prospective Study of Comparison of Epidural Bupivacaine, Fentanyl and their Combination for Postoperative Analgesia in Lower Abdominal and Lower Extremity surgery Chandeshwar Choudhary Dr. Dr. Debarshi Jana Dr. January 2021 10 1 01 02