“Comparative Study of Quality of Subarachnoid Blocks for Caeasarean Section by Using Bupivacaine Alone & Bupivacaine - Fentanyl Combination”. Journal of the Bangladesh Society of Anaesthesiologists 22, no. 2 (March 1, 2014): 61–65. Accessed June 29, 2026. https://banglajol.info/index.php/JBSA/article/view/18144.