1 Department of Anesthesia and Intensive Care, IRCCS - ISMETT (Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione), Palermo, Italy.
2 Department of Anesthesia and Intensive Care, IRCCS - ISMETT (Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione), Palermo, Italy - gmartucci@ismett.edu.
3 Unit of Abdominal Surgery and Organ Transplantation, Department for the Treatment and Study of Abdominal Diseases and Abdominal Transplantation, IRCCS - ISMETT (Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione), Palermo, Italy.