1. Department of Anaesthesiology and Intensive Care, Institute of Clinical Sciences, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
2. Department of Anaesthesiology and Intensive Care, Region Västra Götaland Sahlgrenska University Hospital Gothenburg Sweden
3. Department of Neurology and Rehabilitation and Department of Research, Education and Innovation Södra Älvsborg Hospital Borås Sweden
4. Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
5. Department of Neurosurgery Sahlgrenska University Hospital Gothenburg Sweden