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Atta HM, Mohamed AA, Sewefy AM, Abdel-Fatah AS, Mohammed MM, Atiya AM.Atta HM, et al. Among authors: abdel fatah as.Gastroenterol Res Pract. 2017;2017:6467814. doi: 10.1155/2017/6467814. Epub 2017 Jun 5.Gastroenterol Res Pract. 2017.PMID: 28656045Free PMC article.