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Sikora-Frac M, Zaborska B, Maciejewski P, Budaj A, Bednarz B.Sikora-Frac M, et al. Among authors: bednarz b.Cardiol J. 2021;28(6):923-931. doi: 10.5603/CJ.a2019.0066. Epub 2019 Jul 1.Cardiol J. 2021.PMID: 31257568Free PMC article.