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Cullen K, Jones M, Pockett RD, Burton A, Cross TJS, Rowe IA, Paley L, Tataru D, Alexander G, Marshall A, Fitzsimmons D.Cullen K, et al. Among authors: cross tjs.BMJ Open Gastroenterol. 2023 Feb;10(1):e000998. doi: 10.1136/bmjgast-2022-000998.BMJ Open Gastroenterol. 2023.PMID: 36810207Free PMC article.