C Drechsler, V Krane, E Ritz, W Marz and C. Wanner
Circulation 120 ( 24 ): 2421 - 2428 , 2009
K. S Spanaus, B Kollerits, E Ritz, M Hersberger, F Kronenberg, A von Eckardstein and for the Mild and Moderate Kidney Disease (MMKD) Study Group
Clinical Chemistry 56 ( 5 ): 740 - 749 , 2010