Comparison of inhibitory effect on breakthrough pain of regular intermittent epidural injection at different vertebra interspace during labor analgesia
He Liangliang, Ni Jiaxiang, Li Xuanying, Li Xiuhua, Zheng Shuyue, Li Na, Li Fang
Journal of Capital Medical University . 2014, (1): 23 -27 .  DOI: 10.3969/j.issn.1006-7795.2014.01.006