Akrity Singh and Harinandan Prasad (2013) “Comparative study of duration of analgesia with epidural bupivacaine & bupivacaine with tramadol in lower limb and lower abdominal surgeries”, International Journal of Drug Delivery, 5(2), pp. 239–244. Available at: https://ijdd.arjournals.org/index.php/ijdd/article/view/202 (Accessed: 4 December 2024).