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Eckardt KU, Scherhag A, Macdougall IC, Tsakiris D, Clyne N, Locatelli F, Zaug MF, Burger HU, Drueke TB.Eckardt KU, et al.J Am Soc Nephrol. 2009 Dec;20(12):2651-60. doi: 10.1681/ASN.2009060631. Epub 2009 Oct 22.J Am Soc Nephrol. 2009.PMID: 19850955Free PMC article.Clinical Trial.