舒芬太尼或芬太尼复合小剂量布比卡因用于老年患者腰麻的效果
서분태니혹분태니복합소제량포비잡인용우노년환자요마적효과
Clinical study of spinal anesthesia with low dose of bupivacaine combined with sufentanil or fentanyl in elderly patients
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