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Person E, Rife C, Freeman J, Clark A, Castell DO.Person E, et al. Among authors: castell do.J Clin Gastroenterol. 2015 Sep;49(8):655-9. doi: 10.1097/MCG.0000000000000359.J Clin Gastroenterol. 2015.PMID: 26053170Clinical Trial.
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Wong U, Person EB, Castell DO, von Rosenvinge E, Raufman JP, Xie G.Wong U, et al. Among authors: castell do.J Neurogastroenterol Motil. 2018 Oct 1;24(4):570-576. doi: 10.5056/jnm18010.J Neurogastroenterol Motil. 2018.PMID: 30122029Free PMC article.