1. Department of Thoracic and Cardiovascular Surgery RWTH University Hospital Aachen Aachen Germany
2. Department of Anesthesiology RWTH University Hospital Aachen Aachen Germany
3. Department of Pneumology and Intensive Care Medicine RWTH University Hospital Aachen Aachen Germany
4. Department of Intensive Care and Intermediate Care Medicine RWTH University Hospital Aachen Aachen Germany
5. Department of Cardiology, Angiology and Intensive Care RWTH University Hospital Aachen Aachen Germany