Usha Rani, K.; Zutshi, V.; Patel, M.; Marwah, S. Analgesic Efficacy of Intravenous Paracetamol Versus Intravenous Tramadol After Caesarean Section: A Single Blind Randomized Controlled Study. Int J Reprod Contracept Obstet Gynecol 2016, 5, 4285-4289.