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. 2021 Jun 28;27(24):3502–3515. doi: 10.3748/wjg.v27.i24.3502

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©The Author(s) 2020. Published by Baishideng Publishing Group Inc. All rights reserved.

This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial.

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A simplified diagram of the potential pathological mechanisms for gastrointestinal symptoms in severe acute respiratory syndrome coronavirus 2 infection. ACE2: Angiotensin converting enzyme-2; TMPRSS2: Transmembrane serine protease-2.