1 Department of Anesthesia, Perioperative Medicine and Pain Therapy, Sacred Heart Catholic University, A. Gemelli University Hospital, Rome, Italy - marco.rossi1@unicatt.it.
2 Department of Anesthesia, Resuscitation and Postoperative Intensive Care, Ospedali dei Colli, Naples, Italy.
3 Department of Anesthesia and Intensive Care, Careggi University Hospital, Florence, Italy.
4 Department of General Surgery, University of Milan School of Medicine, Humanitas Research Hospital, Rozzano, Milan, Italy.
5 Department of Anesthesia and Intensive Care Medicine, University of Padua, Padua, Italy.