1. Department of Anaesthesia and Critical Care, University Hospital of Würzburg, Würzburg, Germany
2. Department of Pediatrics, University Hospital of Würzburg, Würzburg, Germany
3. Department of Internal Medicine I, University Hospital of Würzburg, Würzburg, Germany
4. Department of General, Visceral, Vascular and Paediatric Surgery, University Hospital of Würzburg, Würzburg, Germany
5. Department of Internal Medicine V – Respiratory and Critical Care Medicine, University Hospital of Saarland, Homburg, Germany