[1] Helsinki University Hospital and University of Helsinki,Division of Anesthesiology, Department of Anesthesiology, Intensive Care, and Pain Medicine
[2] Helsinki University Hospital and University of Helsinki,Department of Neurosurgery
[3] Helsinki University Hospital and University of Helsinki,Department of Emergency Care and Services
[4] University of Eastern Finland and Kuopio University Hospital,Department of Anesthesiology and Intensive Care
[5] Helsinki University Hospital and University of Helsinki,Department of Neurology