1 Unit of General Surgery, Azienda USL di Ferrara, Ferrara, Italy. Electronic address: [email protected].
2 Unit of General Surgery, Azienda USL di Ferrara, Ferrara, Italy.
3 Department of Diagnostic and Interventional Radiology, Azienda USL di Ferrara, Ferrara, Italy.
4 Department of Surgery, University of Ferrara, Ferrara, Italy.
5 General Surgery, San Jacopo Hospital, Pistoia, Italy.
6 Unit of General Surgery, Azienda USL di Ferrara, Ferrara, Italy; Department of Surgery, University of Ferrara, Azienda USL di Ferrara, Ferrara, Italy.