1. Department of Anesthesiology and Intensive Care Medicine, University Hospital Leipzig, 04103 Leipzig, Germany
2. Department of Anesthesiology, University Medical Center Göttingen, 37075 Göttingen, Germany
3. Department of Pediatric Surgery, University Hospital Leipzig, 04103 Leipzig, Germany
4. Pediatric Intensive Care Unit, Department of Pediatrics, University Hospital Leipzig, 04103 Leipzig, Germany
5. Institute of Pediatric Radiology, University Hospital Leipzig, 04103 Leipzig, Germany
6. Department of Diagnostic and Interventional Radiology, University Hospital Leipzig, 04103 Leipzig, Germany
7. Institute for Medical Statistics, Informatics, and Epidemiology, Medical Faculty, University of Leipzig, 04107 Leipzig, Germany
8. Department of Orthopedics, Traumatology, and Plastic Surgery, University Hospital Leipzig, 04103 Leipzig, Germany