1 Department of Emergency, Anesthesiological and Intensive Care Sciences, IRCCS A. Gemelli University Polyclinic Foundation, Rome, Italy - luciano.frassanito@policlinicogemelli.it.
2 Department of Emergency, Anesthesiological and Intensive Care Sciences, IRCCS A. Gemelli University Polyclinic Foundation, Rome, Italy.
3 Department of Critical Care and Perinatal Medicine, IRCCS Istituto Giannina Gaslini, Genoa, Italy.