轻比重左旋布比卡因单侧腰麻在超高龄患者下肢手术中的应用研究
경비중좌선포비잡인단측요마재초고령환자하지수술중적응용연구
The application of light specific gravity Levebupivacaine used in unilateral spinal anesthesia subject to the super-aged patients with lower extremity surgery
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