1. University Hospital Münster; Department of Anesthesiology, Intensive Care and Pain Medicine; Albert-Schweitzer-Campus 1, Gebäude A Münster Germany 48149
2. Paracelsus Medical University; Department of Anesthesiology, Perioperative and Intensive Care Medicine; Salzburg Austria
3. University of Würzburg; Department of Anaesthesia and Critical Care; Oberduerrbacher Str. 6 Würzburg Germany
4. BG-Universitätsklinikum Bergmannsheil gGmbH; Department of Anaesthesiology, Intensive Care Medicine and Pain Management; Bochum Germany