Kumar, P., Kanna, V., ., K., & ., A. (2018). A clinical study of comparison of effect with 0.15% ropivacaine and fentanyl 2mcg/ml versus 0.125% bupivacaine and fentanyl 2mcg/ml epidurally for labour analgesia. International Journal of Research in Medical Sciences, 6(4), 1422–1428. https://doi.org/10.18203/2320-6012.ijrms20181308