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Haag-Weber M, Eckardt KU, Hörl WH, Roger SD, Vetter A, Roth K.Haag-Weber M, et al.Clin Nephrol. 2012 Jan;77(1):8-17. doi: 10.5414/cn107304.Clin Nephrol. 2012.PMID: 22185963Clinical Trial.