Dr Surabhi Talwar; Dr Rachit Arora. A COMPARATIVE STUDY OF EFFECTS ON SUBARACHNOID BLOCK USING BUPIVACAINE WITH NALBUPHINE HYDROCHLORIDE AND BUPIVACAINE WITH FENTANYL FOR LOWER ABDOMINAL & LOWER LIMB SURGERIES. J Popl Ther Clin Pharmacol 2020, 27 (1), 137-145. https://doi.org/10.53555/k46r5g25.