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Sikora P, von Unruh GE, Beck B, Feldkötter M, Zajaczkowska M, Hesse A, Hoppe B.Sikora P, et al. Among authors: beck b.Kidney Int. 2008 May;73(10):1181-6. doi: 10.1038/ki.2008.63. Epub 2008 Mar 12.Kidney Int. 2008.PMID: 18337715Free article.