Chaudhari, V. L., Thakare, A. B. and Zanwar, Y. N. (2020) “Epidural Butorphanol : Comparison of two different doses in Lower abdominal surgery”., International Journal of Health and Clinical Research, 3(10), pp. 182–186. Available at: https://ijhcr.com/index.php/ijhcr/article/view/337 (Accessed: 16January2026).