内镜下Savary-Gilliard扩张器扩张治疗食管癌术后吻合口狭窄
내경하Savary-Gilliard확장기확장치료식관암술후문합구협착
Dilation therapy with Savary-Gilliard dilator under endoscope for anastomotic stenosis of post operative esophageal carcinoma
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