1. Clinic for Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany
2. Mannheim Biomedical Engineering Laboratories, Medical Faculty at Heidelberg University, Mannheim, Germany
3. Clinic for Anaesthesiology, University Medical Center Göttingen, Göttingen, Germany
4. Institute of Clinical Pharmacology, Hannover Medical School, Hannover, Germany
5. Lung Clinic Immenhausen, Immenhausen, Krs. Kassel, Germany