胸科术后罗哌卡因、布比卡因硬膜外镇痛效果比较及对呼吸功能的影响
흉과술후라고잡인、포비잡인경막외진통효과비교급대호흡공능적영향
Analgesia effect of ropivacaine and bupivacine by patient controlled epidural analgesia on post-thoracotomy pain and the influence on respiratory function
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