1. Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
2. Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
3. Department of Anesthesiology, Emergency and Intensive Care Medicine, University of Göttingen, Göttingen, Germany