Swathi Gajji, and R.Rajeshwar Reddy. 2022. “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 (2):1032-37. https://ijhcr.com/index.php/ijhcr/article/view/5130.