[1] Federico II University Hospital,Department of General and Specialistic Surgeries
[2] University of Naples Federico II,Department of Public Health
[3] University G. D’Annunzio Chieti-Pescara,Department of Medical, Oral and Biotechnological Sciences
[4] University of Rome “La Sapienza”,Department of Surgery “P. Valdoni”
[5] University of Genoa,Department of Surgical Sciences
[6] Policlinico San Martino IRCCS,General Surgery
[7] ASST Spedali Civili Di Brescia,Department of Clinical Medicine and Surgery
[8] University of Naples Federico II,Department of Public Health, School of Medicine and Surgery
[9] University of Naples Federico II,undefined