1. Department of Thoracic and Cardiovascular Surgery; University Hospital Münster; Albert-Schweitzer-Street 33 48149 Münster Germany
2. The Heart Failure Center; Columbia University; New York NY USA
3. Department of Internal Medicine - Angiology/Cardiology; University Hospital Münster; Münster Germany
4. Department of Anesthesiology and Intensive Care; University Hospital Münster; Münster Germany