Patil, R., & Rayadurg, V. (2017). Intravenous paracetamol infusion versus intramuscular tramadol as an intra-partum labor analgesic. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 5(9), 3268–3268. https://doi.org/10.18203/2320-1770.ijrcog20163032