1. Department for Internal Medicine III Cardiology Angiology and Pneumology; University Hospital Heidelberg; Heidelberg Germany
2. DZHK (German Centre for Cardiovascular Research), partner site Heidelberg/Mannheim; University of Heidelberg; Heidelberg Germany
3. Institute for Medical Biometry and Statistics; Faculty of Medicine and Medical Center, University of Freiburg; Freiburg Germany
4. Institute for Evidence in Medicine, Medical Center - University of Freiburg; Faculty of Medicine, University of Freiburg; Freiburg Germany
5. Cardiology Division, Beth Israel Deaconess Medical Center; Harvard Medical School; Boston MA USA
6. Department of Cardiology; Leiden University Medical Center; Leiden Netherlands
7. Institute for Evidence in Medicine; Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg; Freiburg Germany