Department of Gastro-Hepatology;
Ospedale S. Giovanni Battista(Molinette);
Torino;
Italy;
Surgery and Liver Transplantation Centre;
Istituto Nazionale dei Tumori;
Milano;
Italy;
Department of Pathology;
Istituto Addarii;
Bologna;
Italy;
Department of Biology;
Biochemistry and Genetics;
University of Todno;
Italy;