Zhou, T., Nong, F., Wang, M., Liang, Z., & Li, Y. Intravenous butorphanol as an adjunct to patient-controlled epidural analgesia with ropivacaine and sufentanil in labor: A randomized controlled study. IMR Press.
Chicago Style (17th ed.) CitationZhou, Ting, FengYuan Nong, MengXia Wang, ZhaoJia Liang, and YaLan Li. Intravenous Butorphanol as an Adjunct to Patient-controlled Epidural Analgesia with Ropivacaine and Sufentanil in Labor: A Randomized Controlled Study. IMR Press.
MLA (9th ed.) CitationZhou, Ting, et al. Intravenous Butorphanol as an Adjunct to Patient-controlled Epidural Analgesia with Ropivacaine and Sufentanil in Labor: A Randomized Controlled Study. IMR Press.
Warning: These citations may not always be 100% accurate.