1. Neurointensive Care Unit, Department of Perioperative Medicine and Intensive Care, Ospedale San Gerardo, Monza, Italy
2. Department of Clinical Physics, Institute of Neurological Sciences, Southern General Hospital, Glasgow, Scotland
3. Regional Medical Physics Department, James Cook University Hospital, Middlesbrough, England
4. Neuroreanimation Unit, Department of Perioperative Medicine and Intensive Care, Ospedale San Gerardo, Monza, Italy
5. Department of Neurosurgery, University Hospital, Uppsala, Sweden
6. Department of Neurosurgery, Ruprecht-Karls-University, Heidelberg, Germany
7. Kaunas University of Technology, Kaunas, Lithuania
8. Department of Neurosurgery, Vall d'Hebron University Hospital, Autonomous University of Barcelona, Barcelona, Spain
9. Department of Neurosurgery, School of Surgical and Reproductive Sciences, Newcastle University, Newcastle upon Tyne, England