1. Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
2. Department for BioMedical Research (DBMR), University of Bern, 3010 Bern, Switzerland
3. Department of Neurosurgery, Kantonsspital Aarau, 5001 Aarau, Switzerland
4. Faculty of Medicine, University of Bern, 3010 Bern, Switzerland
5. Department of Cardiology, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
6. Department of Anaesthesiology and Pain Medicine, Cantonal Hospital of St. Gallen, 9000 St. Gallen, Switzerland