From the *Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
†Support Center for Advanced Neuroimaging, University Institute for Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
‡Department of Cardiovascular Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Accepted for publication May 1, 2019.
Funding: This work received funding from Bangerter-Rhyner Foundation Grant and Clinical Trials Unit grant of the University Hospital of Bern, Inselspital, Bern, Switzerland.
The authors declare no conflicts of interest.
Clinical trial number: ClinicalTrials.gov; Identifier: NCT02976584.
Address correspondence to Heiko A. Kaiser, MD, Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse, 3010 Bern, Switzerland., Address e-mail to [email protected].