1 Anesthesiology, Critical Care and Pain Medicine Division, Department of Medicine and Surgery, University of Parma, Parma, Italy.
2 Department of Anaesthesia and Intensive Care, Azienda Ospedaliero Universitaria "Policlinico-San Marco, Catania, Italy.
3 Department of Medicine, Anesthesia and Intensive Care Clinic, University of Udine, Udine, Italy.
4 Anesthesiology, Critical Care and Pain Medicine Division, Department of Medicine and Surgery, University of Parma, Parma, Italy. Electronic address: [email protected].