0.125%罗哌卡因不同时间间隔硬膜外规律间断注射分娩镇痛的效果
0.125%라고잡인불동시간간격경막외규률간단주사분면진통적효과
Efficacy of epidural regular intermittent injection of 0.125% ropivacaine at different time intervals on labor analgesia
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