输尿管镜碎石术与经皮肾镜取石治疗输尿管上段结石临床疗效比较
수뇨관경쇄석술여경피신경취석치료수뇨관상단결석림상료효비교
Comparative study of ureteroscopy lithotripsy and percutaneous nephrolithotomy applied on the treatment of ureteral stone