University Hospital, Aachen, NRW, Germany
St. Joseph Krankenhaus Medizinische Klinik II, Berlin, Germany
2. Medizinische Klinik, Nephrologie, Klinikum Augsburg, Augsburg, Germany
Universitätsklinikum Göttingen, Zentrum Innere Medizin, Abteilung für Nephrologie und Rheumatologie, Göttingen, Germany
Department of Medicine, Division of Cardiology, Pulmonary Diseases and Vascular Medicine at the University Hospital, RWTH Aachen, Aachen, NRW, Germany
RWTH University Hospital, Aachen, Germany
Department of Orthopaedic Surgery, University Hospital of the RWTH Aachen, Germany, Aachen, Germany