1 Department of Anaesthesiology and Intensive Care, Catholic University School of Medicine, Largo Agostino Gemelli 8, 00168, Rome, Italy. sandroni@rm.unicatt.it.
2 Department of Anaesthesiology and Intensive Care, Catholic University School of Medicine, Largo Agostino Gemelli 8, 00168, Rome, Italy.
3 Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
4 Medical ICU, Cochin Hospital (AP-HP) Paris Descartes University, Paris, France.
5 Department of Clinical Sciences, Division of Neurology, Lund University, Lund, Sweden.
6 Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium.