1. University Heart Center Lübeck, Medical Clinic II, Department of Cardiology, Angiology and Intensive Care MedicineLübeck Germany
2. Emergency Department University Hospital of Schleswig‐Holstein Lübeck Germany
3. Clinic for Internal Medicine University of Jena Jena Germany
4. Department of Internal Medicine/Cardiology Heart Center Leipzig – University Hospital Leipzig Germany
5. University Emergency Center University of Freiburg Freiburg Germany
6. Department of Biostatistics Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University Mannheim Germany