Taneja, Ashima, Kamaldeep Arora, Isha Chopra, Anju Grewal, Sushree Samiksha Naik, and Geetika Sharma. 2017. “Fetomaternal Outcome in High-Risk Parturients Receiving Epidural Analgesia Using Fentanyl With Ropivacaine Versus Iv Tramadol: A Comparative Study”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 6 (7):2836-40. https://doi.org/10.18203/2320-1770.ijrcog20172611.