罗哌卡因复合布托啡诺连续臂丛神经阻滞用于上肢手术术后镇痛的研究
라고잡인복합포탁배낙련속비총신경조체용우상지수술술후진통적연구
Study of ropivacaine combined with butorphanol through continuous brachial plexus block for postoperative analgesia in the upper limb surgery
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