小剂量布比卡因蛛网膜下腔阻滞联合硬脊膜外腔阻滞用于分娩镇痛的临床观察
소제량포비잡인주망막하강조체연합경척막외강조체용우분면진통적림상관찰
Low-dose spinal bupivacaine combined with spinal and epidural anesthesia in labor analgesia:a clinical observation
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