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Open-Access Journal
Review
George Stavrou, Anne Shrewsbury, Katerina Kotzampassi 
World J Gastrointest Endosc 13(8):238-259. Published online Aug 16, 2021. doi: 10.4253/wjge.v13.i8.238
David J Sanders, Shivanand Bomman, Rajesh Krishnamoorthi, Richard A Kozarek 
World J Gastrointest Endosc 13(8):260-274. Published online Aug 16, 2021. doi: 10.4253/wjge.v13.i8.260
Endrit Shahini, Diogo Libânio, Giacomo Lo Secco, Antonio Pisani, Alberto Arezzo 
World J Gastrointest Endosc 13(8):275-295. Published online Aug 16, 2021. doi: 10.4253/wjge.v13.i8.275
Minireviews
Daniel E Hogan, Michael Ma, David Kadosh, Alisha Menon, Kana Chin, Arun Swaminath 
World J Gastrointest Endosc 13(8):296-301. Published online Aug 16, 2021. doi: 10.4253/wjge.v13.i8.296
Rishi Pawa, Troy Pleasant, Chloe Tom, Swati Pawa 
World J Gastrointest Endosc 13(8):302-318. Published online Aug 16, 2021. doi: 10.4253/wjge.v13.i8.302
Retrospective Study
Flavio Roberto Takeda, Carlos de Almeida Obregon, Yasmin Peres Navarro, Diogo Turiani Hourneaux Moura, Ulysses Ribeiro Jr, Rubens Antonio Aissar Sallum, Ivan Cecconello 
World J Gastrointest Endosc 13(8):319-328. Published online Aug 16, 2021. doi: 10.4253/wjge.v13.i8.319
Prospective Study
Truptesh H Kothari, Krystle Bittner, Shivangi Kothari, Vivek Kaul 
World J Gastrointest Endosc 13(8):329-335. Published online Aug 16, 2021. doi: 10.4253/wjge.v13.i8.329
Systematic Reviews
Samuel Y Han, Georgios I Papachristou, Raj J Shah, Darwin L Conwell 
World J Gastrointest Endosc 13(8):336-344. Published online Aug 16, 2021. doi: 10.4253/wjge.v13.i8.336
Meta-Analysis
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