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2018Chang YW, Ko WJ, Oh CH, Park YM, Oh SJ, Moon JR, Cho JH, Kim JW, Jang JY. Clarithromycin resistance and female gender affect Helicobacter pylori eradication failure in chronic gastritis. Korean J Intern Med. 2018 Jun 14. doi: 10.3904/kjim.2018.054.

2018Ko WJ, Kim YM, Yoo IK, Cho JY. Clinical outcomes of minimally invasive treatment for early gastric cancer in patients beyond the indications of endoscopic submucosal dissection. Surg Endosc. 2018 Sep;32(9):3798-3805. doi: 10.1007/s00464-018-6105-4.

2017Kwon CI, Kim G, Moon JP, Yun H, Ko WJ, Cho JY, Hong SP. Performance of disposable endoscopic forceps according to the manufacturing techniques. Korean J Intern Med. 2018 Mar 5. doi: 10.3904/kjim.2017.191.

2017Ko WJ, Cho JY. Introduction to Endoscopic Submucosal Surgery. Clin Endosc. 2018 Jan;51(1):8-12. doi: 10.5946/ce.2017.154.

2017Kim WH, Cho JY, Ko WJ, Hong SP, Hahm KB, Cho JH, Lee TH, Hong SJ. Comparison of the Outcomes of Peroral Endoscopic Myotomy for Achalasia According to Manometric Subtype. Gut Liver. 2017 Sep 15;11(5):642-647. doi: 10.5009/gnl16545.

2017Kumbhari V, Familiari P, Bjerregaard NC, Pioche M, Jones E, Ko WJ, Hayee B, Cali A, Ngamruengphong S, Mion F, Hernaez R, Roman S, Tieu AH, El Zein M, Ajayi T, Haji A, Cho JY, Hazey J, Perry KA, Ponchon T, Kunda R, Costamagna G, Khashab MA. Gastroesophageal reflux after peroral endoscopic myotomy: a multicenter case-control study. Endoscopy. 2017 Jul;49(7):634-642. doi: 10.1055/s-0043-105485. Epub 2017 May 4.

2016Ko WJ, Song GW, Kim WH, Hong SP, Cho JY. Endoscopic resection of early gastric cancer: current status and new approaches. Transl Gastroenterol Hepatol. 2016 Apr 6;1:24. doi: 10.21037/tgh.2016.03.22. eCollection 2016. Review.

2016Ko WJ, Song GW, Cho JY. Evaluation and Endoscopic Management of Esophageal Submucosal Tumor. Clin Endosc. 2017 May;50(3):250-253. doi: 10.5946/ce.2016.109. Epub 2016 Nov 7. Review.

2016Ko WJ, Song GW, Hahm KB, Hong SP, Cho JY, Cho JH, Jin SY. Tissue diagnosis of GI subepithelial tumor only through Trucut biopsy under a forward-viewing endoscope: applicability as newer diagnostic modality. Surg Endosc. 2016 May 18.

2016Song JH, Ko WJ, Song GW, Hahm KB, Cho JY. Urgent hemostasis of active appendiceal bleeding by intra-appendiceal stent insertion and detachable snare wrapping. Gastrointest Endosc. 2016 Apr 18.

2016Lee S, Park JM, Jeong M, Han YM, Go EJ, Ko WJ, Cho JY, Kwon CI, Hahm KB. Korean red ginseng ameliorated experimental pancreatitis through the inhibition of hydrogen sulfide in mice. Pancreatology. 2016 Mar 8.

2016Hong HJ, Song GW, Ko WJ, Kim WH, Hahm KB, Hong SP, Cho JY. Double-Scope Peroral Endoscopic Myotomy (POEM) for Esophageal Achalasia: The First Trial of a New Double-Scope POEM. Clin Endosc. 2016 Mar 15.

2015Cho JH, Cha SW, Kim HG, Lee TH, Cho JY, Ko WJ, Jin SY, Park S. Long-term outcomes of endoscopic submucosal dissection for early gastric cancer: a comparison study to surgery using propensity score-matched analysis. Surg Endosc. 2015 Dec 10.