1 Department of Internal Medicine V-Pneumology, Allergology, and Critical Care Medicine, University Hospital of Saarland, Homburg/Saar, Germany.
2 Department of Anaesthesiology, University Hospital of Göttingen, Göttingen, Germany.
3 Department of Anaesthesiology and Critical Care, Campus Kassel of the University of Southampton, Kassel, Germany.
4 Department of Thoracic and Cardiovascular Surgery, University Hospital of Saarland, Homburg/Saar, Germany.
5 Department of Cardiothoracic Surgery, University of Alabama at Birmingham, Birmingham, AL.
6 Department of Surgery, University of Kentucky, Lexington, KY.
7 Department of Internal Medicine V-Pneumology, Allergology, and Critical Care Medicine, University Hospital of Saarland, Homburg/Saar, Germany. Electronic address: [email protected].