Chopra, Isha, and Sushil Chabra. 2022. “A Comparative Study of 0.15% Bupivacaine With Tramadol and 0.15% Ropivacaine With Tramadol for Epidural Labour Analgesia”. GMC Patiala Journal of Research and Medical Education 5 (01):38-42. https://doi.org/10.56412/gmcp.2022.5.01.93.