超声引导下腰丛坐骨神经阻滞与腰硬联合麻醉在老年骨科PFNA手术中的比较研究
초성인도하요총좌골신경조체여요경연합마취재노년골과PFNA수술중적비교연구
Comparative study of treating elderly orthopedics disease with PFNA operation between ultrasound guided lumbar plexus sciatic nerve block and epidural anesthesia
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