1. University Department of Anesthesiology and Pain Medicine, Inselspital, University Hospital Bern, University of Bern , Bern, Switzerland
2. Department of Anesthesiology, Intensive Care and Pain Medicine, Balgrist University Hospital, University of Zurich , Zurich, Switzerland
3. Department of Interdisciplinary Critical Care Medicine and Intermediate Care, Helios Klinikum Erfurt , Erfurt, Germany