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Pająk A, Szafraniec K, Janion M, Szpak A, Wizner B, Wolfshaut-Wolak R, Broda G, Cichocka I, Drygas W, Gąsior Z, Grodzicki T, Zdrojewski T; Polkard study group.Pająk A, et al. Among authors: szafraniec k.Kardiol Pol. 2010 Dec;68(12):1332-40.Kardiol Pol. 2010.PMID: 21174285
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Pajak A, Szafraniec K, Kubinova R, Malyutina S, Peasey A, Pikhart H, Nikitin Y, Marmot M, Bobak M.Pajak A, et al. Among authors: szafraniec k.PLoS One. 2013 Jun 7;8(6):e65856. doi: 10.1371/journal.pone.0065856. Print 2013.PLoS One. 2013.PMID: 23762441Free PMC article.
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Pająk A, Szafraniec K, Polak M, Polakowska M, Kozela M, Piotrowski W, Kwaśniewska M, Podolecka E, Kozakiewicz K, Tykarski A, Zdrojewski T, Drygas W; WOBASZ Investigators.Pająk A, et al. Among authors: szafraniec k.Pol Arch Med Wewn. 2016 Jul 19;126(9):642-652. doi: 10.20452/pamw.3464. Epub 2016 Jul 19.Pol Arch Med Wewn. 2016.PMID: 27452484Free article.