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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Flowchart of the study. We show the inclusion in the analysis and the main outcomes of the study: endoscopic resection, surgery, residual disease after endoscopic resection and extraluminal disease after surgical resection.