中国计划生育学杂志
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不同剂量罗哌卡因复合芬太尼行阶梯式分娩镇痛效果比较
南京医科大学附属南京市江宁医院(211101)
Effect comparison of the different doses of ropivacaine combined with fentanyl for stepwise labor analgesia
Jiangning Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, 211101