1. Department of Cardiology and Cardiovascular Medicine, University Hospital Eberhard Karls University Tuebingen, Tuebingen, Germany
2. Department of Anesthesiology, University Hospital Eberhard Karls University Tuebingen, Tuebingen, Germany
3. Department of Cardiovascular Surgery, University Hospital Eberhard Karls University Tuebingen, Tuebingen, Germany
4. Department of Cardiology, University Hospital Johannes Gutenberg‐University Mainz, Mainz, Germany