Anshuman Shukla, Sumita Kumari, Vinita Singh, Satyajeet Verma and Sujeet Rai (2020) “Comparison of Hypobaric Bupivacaine, With and Without Fentanyl for Patients Undergoing Surgeries around Hip: A Randomized Double Blind Study from North India”, Academia Anesthesiologica International, 5(1), pp. 52-56. doi: 10.21276/aan.2020.5.1.10.