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Review
Bruno Lima Rodrigues, Márcia Carolina Mazzaro, Cristiane Kibune Nagasako, Maria de Lourdes Setsuko Ayrizono, João José Fagundes, Raquel Franco Leal 
World J Gastrointest Endosc 12(12):504-520. Published online Dec 16, 2020. doi: 10.4253/wjge.v12.i12.504
Minireviews
Akshay B Shanbhag, Prashanthi N Thota, Madhusudhan R Sanaka 
World J Gastrointest Endosc 12(12):521-531. Published online Dec 16, 2020. doi: 10.4253/wjge.v12.i12.521
Retrospective Cohort Study
Jennifer M Kolb, Daniel Jonas, Mateus Pereira Funari, Hazem Hammad, Paul Menard-Katcher, Mihir S Wagh 
World J Gastrointest Endosc 12(12):532-541. Published online Dec 16, 2020. doi: 10.4253/wjge.v12.i12.532
Rhys Collyer, Annabel Clancy, Gaurav Agrawal, Thomas J Borody 
World J Gastrointest Endosc 12(12):542-554. Published online Dec 16, 2020. doi: 10.4253/wjge.v12.i12.542
Case Report
Silvia Cocca, Giuseppe Grande, Luca Reggiani Bonetti, Paolo Magistri, Stefano Di Sandro, Fabrizio Di Benedetto, Rita Conigliaro, Helga Bertani 
World J Gastrointest Endosc 12(12):555-559. Published online Dec 16, 2020. doi: 10.4253/wjge.v12.i12.555
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