Institution: | 1.Internal Medicine D, Department of Nephrology, Hypertension and Rheumatology, University Hospital Muenster, Muenster, Germany;2.Institute of Physiology I, Westfaelische Wilhelms-University, Muenster, Germany;3.Analytical Chemistry NC4/72, Biomolecular Mass Spectrometry/Proteincenter, Ruhr-University Bochum,, Muenster, Germany |