1. Internal Medicine III – Cardiology, Angiology and Intensive Care Medicine Saarland University Medical CenterSaarland University Homburg Germany
2. AGAPLESION MARKUS KRANKENHAUS Frankfurt Germany
3. Department of Internal Medicine I – Cardiology, Angiology, Intensive Care Medicine University Hospital Jena Jena Germany
4. Internal Medicine II – Cardiology Sana Hanse‐Klinikum Wismar Wismar Germany
5. Internal Medicine IV – Nephrology and Hypertension Saarland University Medical Center Homburg Germany
6. Institute for Medical Biometry, Epidemiology and Medical Informatics Saarland UniversityUniversity Medical Center Homburg Germany
7. Institute for Clinical Chemistry and Clinical Pharmacology Medical Faculty University of Bonn Bonn Germany
8. School of Medicine and Health Sciences Carl von Ossietzky UniversityUniversity Clinic of Internal Medicine, Cardiology Oldenburg Germany