1. Department of Internal Medicine, Division of Cardiology and Angiology Magdeburg University Leipziger Str. 44 Magdeburg D‐39120 Germany
2. Department of Radiology Magdeburg University Magdeburg Germany
3. Institute of Biometry and Medical Informatics Magdeburg University Magdeburg Germany
4. Department of Cardiology Leiden University Medical Center Leiden The Netherlands