结论：在鳞状上皮组织和柱状上皮组织中，RF A治疗组内镜活检标本出现上皮下结构的几率与非处理组相似。
Conclusions: In both squamous and columnar tissue, endoscopic biopsy samples after RFA were as likely to demonstrate subepithelium as untreated controls.
结论：在鳞状上皮组织和柱状上皮组织中，RF A治疗组内镜活检标本出现上皮下结构的几率与非处理组相似。
Conclusions: In both squamous and columnar tissue, endoscopic biopsy samples after RFA were as likely to demonstrate subepithelium as untreated controls.
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