Poudel, Hari, Surinder Nath Bawa, and Surendra Mohan Sharma. 2020. “A Comparative Clinical Study of Intrathecal Hyperbaric Bupivacaine With and Without Fentanyl for Hysterectomy”. Asian Journal of Medical Sciences 11 (2):59-63. https://nepjol.info/index.php/AJMS/article/view/26548.