1 Department of Intensive Care, Emergency Medicine and Anaesthesiology, Fondazione Policlinico Universitario A. Gemelli-IRCCS, Rome, Italy. claudio.sandroni@policlinicogemelli.it.
2 Institute of Anaesthesiology and Intensive Care Medicine, Università Cattolica del Sacro Cuore, Largo Francesco Vito, 1, 00168, Rome, Italy. claudio.sandroni@policlinicogemelli.it.
3 Department of Clinical Sciences Lund, Neurology, Lund University, Skane University Hospital, Lund, Sweden.
4 Department of Clinical Neurophysiology, Technical Medical Center, University of Twente, Enschede, The Netherlands.
5 Department of Neurology, Rijnstate Hospital, Arnhem, The Netherlands.