Swathi Gajji, and R.Rajeshwar Reddy. “Comparative Study of Epidural 0.2% Ropivacine and Fentanyl With 0.2%levobupivacine and Fentanyl for Postoperative Pain Relief for Modified Radical Mastectomy”. International Journal of Health and Clinical Research 5, no. 2 (January 17, 2022): 1032–1037. Accessed December 22, 2024. https://ijhcr.com/index.php/ijhcr/article/view/5130.