1 Department of Medicine D, Division of General Internal Medicine, Nephrology and Rheumatology, University Hospital of Münster, 48149 Münster, Germany. katharina.schuette-nuetgen@gmx.de.
2 Department of Medicine D, Division of General Internal Medicine, Nephrology and Rheumatology, University Hospital of Münster, 48149 Münster, Germany. gerold.thoelking@ukmuenster.de.
3 Department of Medicine D, Division of General Internal Medicine, Nephrology and Rheumatology, University Hospital of Münster, 48149 Münster, Germany. j_steinke@ymail.com.
4 Department of Medicine D, Division of General Internal Medicine, Nephrology and Rheumatology, University Hospital of Münster, 48149 Münster, Germany. hermann.pavenstaedt@ukmuenster.de.
5 Institute of Biostatistics and Clinical Research, University Hospital of Münster, 48149 Münster, Germany. rene.schmidt@ukmuenster.de.
6 Department of Medicine D, Division of General Internal Medicine, Nephrology and Rheumatology, University Hospital of Münster, 48149 Münster, Germany. barbara.suwelack@ukmuenster.de.
7 Department of Medicine D, Division of General Internal Medicine, Nephrology and Rheumatology, University Hospital of Münster, 48149 Münster, Germany. Stefan.Reuter@ukmuenster.de.