Dhakal, Y. “Effects of Adding Intrathecal Fentanyl As Adjunct to Hyperbaric Bupivacaine in Vaginal Hysterectomy: A Double Blinded Randomized Controlled Trial”. Journal of Nepalgunj Medical College, vol. 15, no. 1, July 2017, pp. 32-35, doi:10.3126/jngmc.v15i1.23559.