Optimum interval time of programmed intermittent epidural bolus of ropivacaine 0.08% with sufentanyl 0.3 μg/mL for labor analgesia: a biased-coin up-and-down sequential allocation...

por Zhou, Shuang-Qiong, Wang, Jing, Du, Wei-Jia, Song, Yu-Jie, Xu, Zhen-Dong, Liu, Zhi-Qiang
Publicado 2020