1. Laparoscopic Surgical Unit; M. Mellini Hospital; Chiari Italy
2. Department of Digestive Surgery and Liver Unit; St Maria Hospital; Terni Italy
3. Tift College of Education; Mercer University; Atlanta GA USA
4. Colorectal Surgery Unit; St-Luc University Hospital; Université Catholique de Louvain (UCL); Brussels Belgium
5. Division of GI Surgery; Department of Abdominal Oncology; Istituto nazionale per lo studio e la cura dei tumori ‘Fondazione Giovanni Pascale’ IRCCS; Naples Italy