1 Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy.
2 Department of Medical and Surgical Sciences, C.U.R.E. (University Centre for Liver Disease Research and Treatment), Liver Unit, University of Foggia, Foggia, Italy.
3 Department of Health Sciences, University of Genoa, IRCCS-Ospedale Policlinico San Martino, Genoa, Italy.