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Pietrzak A, Skrzydło-Radomańska B, Mulak A, Lipiński M, Małecka-Panas E, Reguła J, Rydzewska G.Pietrzak A, et al.Prz Gastroenterol. 2018;13(4):259-288. doi: 10.5114/pg.2018.78343. Epub 2018 Sep 19.Prz Gastroenterol. 2018.PMID: 30581501Free PMC article.