1 Anaesthesia and Intensive Care Units, Humanitas Clinical and Research Hospital, IRCCS, Rozzano, Milan, Italy.
2 Anaesthesia and Intensive Care Units, Humanitas Clinical and Research Hospital, IRCCS, Rozzano, Milan, Italy; Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy. Electronic address: alessandro.protti@hunimed.eu.