“Caudal Tramadol Bupivacaine Combination for Postoperative Pain Releif in Subumbilical Paediatric Surgery”. Journal of the Bangladesh Society of Anaesthesiologists 23, no. 2 (March 2, 2014): 42–46. Accessed June 29, 2026. https://banglajol.info/index.php/JBSA/article/view/18172.