罗哌卡因3mg加入舒芬太尼鞘内注射对分娩镇痛量效反应关系的影响
라고잡인3mg가입서분태니초내주사대분면진통량효반응관계적영향
Influence of sufentanil combined with 3 mg ropivacaine on dose-response relation during labor analgesia
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