“Comparative Study of Analgesic Effect of Intrathecal Nalbuphine and Tramadol in Patients Undergoing Vaginal Hysterectomy”. International Journal of Biomedical and Advance Research 9, no. 4 (May 1, 2018): 136–141. Accessed March 12, 2026. https://ssjournals.co.in/index.php/ijbar/article/view/4697.