输尿管镜下气压弹道碎石术治疗输尿管中下段结石74例的疗效分析
수뇨관경하기압탄도쇄석술치료수뇨관중하단결석74례적료효분석
Efficacy of ureteroscopic pneumatic lithotripsy for middle and lower ureteral stones in 74 cases
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