Patil, R. and 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 (Feb. 2017), 3268–3268. DOI:https://doi.org/10.18203/2320-1770.ijrcog20163032.