Peroral endoscopic myotomy for achalasia combined with esophageal varices by Ah Young Lee, Joo Young Cho

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Influence of sarcopenia on clinical outcomes in peptic ulcer bleeding: a retrospective single-center analysis in Korea by Ji Hoon Yu, Hyun Tak Lee, Seok Ki Jang, Ah Young Lee, Jun-young Seo

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The comparative study of Stretta radiofrequency and anti-reflux mucosectomy in the management of intractable gastroesophageal reflux disease: a single-center retrospective study fr... by Ah Young Lee, Ji Woo Choi, Jeong Haeng Heo, Jun Young Chung, Seong Hwan Kim, Joo Young Cho

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Validation of a Novel Endoscopic Feature that Predicts Helicobacter pylori-negative Status: Does the Scratch Sign Reflect H. pylori Non-infection? by Jun-young Seo, Hyo-Jin Cho, Sang Jong Park, Ah Young Lee, Sang-Jung Kim, Ji Yong Ahn

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