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Cyplik P, Marecik R, Piotrowska-Cyplik A, Olejnik A, Drożdżyńska A, Chrzanowski L.Cyplik P, et al.Water Air Soil Pollut. 2012 May;223(4):1791-1800. doi: 10.1007/s11270-011-0984-5. Epub 2011 Oct 11.Water Air Soil Pollut. 2012.PMID: 22593607Free PMC article.