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Citation
Sun Y, Zhang Z, Zheng CQ, Sang LX. Mucosal lesions of the upper gastrointestinal tract in patients with ulcerative colitis: A review. World J Gastroenterol 2021; 27(22): 2963-2978 [PMID: 34168401 DOI: 10.3748/wjg.v27.i22.2963]
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