1. Department of Anaesthesiology and Intensive Care Medicine, University Hospital Leipzig, Leipzig, Germany
2. Department of Diagnostic and Interventional Radiology, University Hospital Leipzig, Leipzig, Germany
3. Department of Anaesthesiology and Intensive Care Medicine, University Hospital Jena, Jena, Germany
4. Department of Anaesthesia and Pain Therapy, Helios Spital Überlingen, Überlingen, Germany
5. Emergency Department, University Hospital Leipzig, Leipzig, Germany
6. Department of Orthopedics, Traumatology and Plastic Surgery, University Hospital Leipzig, Leipzig, Germany