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), pp. 3268–3268. doi: 10.18203/2320-1770.ijrcog20163032.