舒芬太尼复合罗哌卡因剖宫产术后患者硬膜外自控镇痛的效果
서분태니복합라고잡인부궁산술후환자경막외자공진통적효과
Sufentanil combined with 0.125 % ropilvacaine for postoperative patient-controlled epidural analgesia after cesarean section
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