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Śpiewak M, Biernacka EK, Petryka-Mazurkiewicz J, Mazurkiewicz Ł, Miłosz-Wieczorek B, Ojrzyńska N, Kuśmierczyk M, Różański J, Hoffman P, Demkow M, Rużyłło W, Marczak M.Śpiewak M, et al. Among authors: ruzyllo w.Kardiol Pol. 2020 Mar 25;78(3):227-234. doi: 10.33963/KP.15184. Epub 2020 Feb 10.Kardiol Pol. 2020.PMID: 32041929Free article.