1. Department of Medicine and Health Science “V. Tiberio”, University of Molise, 86100 Campobasso, Italy
2. Department of Clinical Medicine and Surgery, University of Naples Federico II, 80131 Naples, Italy
3. Hepatobiliary and Pancreatic Surgery Unit, Pineta Grande Hospital, 81030 Castel Volturno, Italy
4. Interdisciplinary Department of Medicine, Section of Radiology and Radiation Oncology, University of Bari “Aldo Moro”, 70124 Bari, Italy
5. AORN dei Colli, 80131 Naples, Italy