1. Medical Faculty, University Clinic for Cardiology and Angiology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
2. Diaverum Renal Services, MVZ Potsdam, Potsdam, Germany
3. Medical Faculty, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
4. Department of Nephrology and Endocrinology, Klinikum Ernst von Bergmann, Potsdam, Germany
5. Department of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Germany
6. Department of Cardiology, Immanuel Diakonie Bernau, Heart Center Brandenburg, Brandenburg Medical School Theodor Fontane (MHB), Germany
7. Institute of Social Medicine and Health Systems Research, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
8. Faculty of Health Sciences Brandenburg, Potsdam, Germany