Dr. Saurabh Sharma, Dr. Neeharika Arora, Dr. Sayeddurrehman, Dr. Jyoti Pathania. EFFECT OF ADDING NALBUPHINE VS FENTANYL ON BLOCK CHARACTERISTICS OF 0.75% HYPERBARIC ROPIVACAINE IN LOWER LIMB SURGERY: A RANDOMIZED CONTROL TRIAL. J Popl Ther Clin Pharmacol. 2025;32(2):1145-1151. doi:10.53555/6tzg1980