罗哌卡因与布比卡因复合芬太尼用于老年食管癌根治术后镇痛
라고잡인여포비잡인복합분태니용우노년식관암근치술후진통
Comparing the effect of ropivacaine and bupivacaine combined with fentanyl on patient-controlled epidural analgesia after esophageal carcinoma surgery in elderly patients
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