Bhatia, Upasna, Nirav Patel, Nirav Patel, and Nirzari Parikh. 2018. “Comparison of Intrathecal Adjuvants With Bupivacaine Using Fentanyl 50g and Butorphanol 25g: Comparison of Intrathecal Adjuvants With Bupivacaine Using Fentanyl 50 Ug and Butorphanol 25 Ug”. National Journal of Integrated Research in Medicine 8 (3):41-48. http://nicpd.ac.in/ojs-/index.php/njirm/article/view/1242.