1. Division of Perioperative Services Intensive Care Medicine and Pain Management Turku University Hospital and University of Turku Turku Finland
2. Department of Anaesthesiology and Intensive Care University of Turku Turku Finland
3. Division of Clinical Neurosciences Department of Neurosurgery Turku University Hospital and University of Turku Turku Finland
4. Turku Brain Injury Centre Turku University Hospital Turku Finland
5. Department of Anaesthesiology & Pain Medicine University of Washington Seattle WA USA
6. Department of Clinical Medicine, Biostatistics University of Turku and Turku University Hospital Finland
7. Department of Anaesthesiology Intensive Care and Pain Medicine University of Helsinki and HUS Helsinki University Hospital Turku Finland