[1] University of Helsinki and Helsinki University Hospital,Department of Anaesthesiology, Intensive Care and Pain Medicine
[2] University of Helsinki and Helsinki University Hospital,Department of Emergency Medicine and Services
[3] Päijät-Häme Central Hospital,Department of Intensive Care
[4] University of Helsinki and Helsinki University Hospital,Department of Neurology
[5] Helsinki University Hospital and University of Helsinki,HUS Medical Imaging Center, Clinical Neurophysiology
[6] Kuopio University Hospital,Department of Intensive Care
[7] Aarhus University Hospital,Department of Intensive Care
[8] Central Finland Central Hospital,Department of Intensive Care
[9] North Karelia Central Hospital,undefined