1. Department of Cardiothoracic Surgery University Hospital of Regensburg, Regensburg, Germany, -regensburg.de
2. Internal Medicine, University Hospital of Regensburg, Regensburg, Germany
3. Departments of Anaesthesiology, University Hospital of Regensburg, Regensburg, Germany
4. Department of Cardiothoracic Surgery University Hospital of Regensburg, Regensburg, Germany