Affiliation: | 1 Department of Nephrology, University Hospital, Heinrich-Heine-University Düsseldorf, Germany;2 Department of Medicine 1, Marienhospital Herne, Ruhr-University Bochum, Münster, Germany;3 Department of Medicine 2, Marienhospital Herne, Ruhr-University Bochum, Münster, Germany;4 Department of Computation Statistics, Heinrich-Heine-University Düsseldorf, Münster, Germany;5 Umweltprobenbank des Bundes, Münster, Germany. |