1. Department of Anesthesiology and Intensive Care Medicine, University Hospital Leipzig, Liebigstr. 20, 04103 Leipzig, Germany
2. Institute for Medical Statistics, Informatics and Epidemiology, Medical Faculty, University of Leipzig, 04107 Leipzig, Germany
3. Department of Diagnostic and Interventional Radiology, University Hospital Leipzig, Liebigstr. 20, 04103 Leipzig, Germany
4. Division of Hepatology, Department of Gastroenterology, University Hospital Leipzig, Liebigstr. 20, 04103 Leipzig, Germany