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Gungabissoon U, Gibbons DC, Requena G, Ribeiro de Souza A, Smith H.Gungabissoon U, et al. Among authors: gibbons dc.BMJ Open Gastroenterol. 2022 Aug;9(1):e000857. doi: 10.1136/bmjgast-2021-000857.BMJ Open Gastroenterol. 2022.PMID: 35973742Free PMC article.