1. 1Section of General Surgery, Department of Oncology, San Luigi Hospital, Regione Gonzole 10, Orbassano (Torino), Italy, Tel. 0119026224
2. 2Section of General Surgery, Department of Surgery, Santa Croce e Carle Hospital, Cuneo, Italy
3. 4Department of Surgery, Radiology and Public Health, Public Health and Humanities Section, University of Brescia - Centre of Bioethics Research, Brescia, Italy
4. 5Department of Clinical Medicine and Surgery, Naples, Italy, University of Naples “Federico II”, Naples, Italy
5. 3Department of Advanced Biomedical Sciences, Naples, Italy, University of Naples “Federico II”, Naples, Italy