1. Neurocritical Care Unit, Department of Neurosurgery, University Hospital Zurich, Zurich, Switzerland
2. Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, Zurich, Switzerland
3. Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
4. Department of Neurosurgery, Kantonsspital Aarau, Aarau, Switzerland