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Open-Access Journal
Review
Benjamin M Shandro, Khemraj Emrith, Gregory Slabaugh, Andrew Poullis, Melvyn L Smith 
World J Gastrointest Endosc 12(5):138-148. Published online May 16, 2020. doi: 10.4253/wjge.v12.i5.138
Retrospective Study
Antonio Mendoza Ladd, Mohammad Bashashati, Alberto Contreras, Onyedika Umeanaeto, Alejandro Robles 
World J Gastrointest Endosc 12(5):149-158. Published online May 16, 2020. doi: 10.4253/wjge.v12.i5.149
Systematic Reviews
Bilal Gondal, Haider Haider, Yuga Komaki, Fukiko Komaki, Dejan Micic, David T Rubin, Atsushi Sakuraba 
World J Gastrointest Endosc 12(5):159-171. Published online May 16, 2020. doi: 10.4253/wjge.v12.i5.159
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