1. Department of Anaesthesia and Intensive Care, Azienda Ospedaliero Universitaria Policlinico, Modena, Italy
2. Department of Anaesthesia and Intensive Care, Azienda Ospedaliero Universitaria Policlinico, Bologna, Italy
3. Hepato-Pancreato-Biliary Surgery and Liver Transplantation Unit, University of Modena and Reggio Emilia, Modena, Italy