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Godzik P, Kołakowska A, Madaliński K, Stepień M, Zieliński A, Góralewska A, Kazimierska M, Kunc-Kozioł R, Nadolska B, Pawłowska A, Piskorek A, Równiak J, Rosińska M.Godzik P, et al.Przegl Epidemiol. 2012;66(4):575-80.Przegl Epidemiol. 2012.PMID: 23484383Free article.Polish.