舒芬太尼对剖宫产罗哌卡因蛛网膜下腔阻滞术后镇痛的影响
서분태니대부궁산라고잡인주망막하강조체술후진통적영향
Effects of sufentanil on postoperative analgesia by subarachnoid block for cesarean section with ropivacaine
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