Anna Teresa Mazzeo1, Sergio Maimone2. 1. Department of Surgical Sciences, Anesthesia and Intensive Care, University of Turin, Azienda Ospedaliera Città della Salute e della Scienza di Torino, Presidio Molinette, Turin, Italy. 2. Division of Clinical and Molecular Hepatology, University Hospital of Messina, Messina, Italy. Electronic address: smaimone@unime.it.