顺行和逆行球囊扩张加钬激光内切开术治疗输尿管上段狭窄的临床研究
순행화역행구낭확장가화격광내절개술치료수뇨관상단협착적림상연구
Comparson of antergrade retrograde balloon dilation combined with holmium laser for upper-ureteral stritures
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