1. Liver Unit and Interventional Ultrasound Unit, Athena Clinical Institute, Via Matese 90, 81016 Piedimonte Matese (CE), Italy
2. Liver Unit, Cardarelli General Hospital, Naples; Italy
3. Internal Medicine Unit, Brindisi General Hospital, Brindisi, Italy
4. Radiation Oncology Unit, Campus Biomedico University, Rome, Italy
5. Department of Woman and Child Health and Public Health, Fondazione Policlinico A. Gemelli IRCSS, Rome, Italyǁ