“A Comparative study of intrathecal hyperbaric Bupivacaine with or without Morphine for Post-Operative Analgesia in Hysterectomy”, Nepal J Obstet Gynaecol, vol. 13, no. 1, pp. 34–37, Nov. 2018, Accessed: Jul. 04, 2026. [Online]. Available: https://nepjol.info/index.php/NJOG/article/view/21615