1. Department of Medical Science, University of Ferrara, 44121 Ferrara, Italy
2. Clinical Trial and Biostatistics, Research and Development Unit, University Hospital of Ferrara, 44121 Ferrara, Italy
3. Unit of Biostatistics, Epidemiology and Public Health, Department of Cardiac Thoracic, Vascular Sciences, University of Padua, 35122 Padua, Italy
4. Department of Scienze Medico Chirurgiche e Medicina Traslazionale, University of Roma, S. Andrea University Hospital, 00189 Rome, Italy
5. Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00136 Rome, Italy
6. Institute of Image-Guided Surgery, IHU-Strasbourg, 67000 Strasbourg, France
7. Division of Laparoscopic and Robotic Surgery Unit, A.O.R.N. dei Colli Monaldi Hospital, 80131 Naples, Italy
8. Division of Surgical Oncology and Digestive Surgery, Department of Oncology, San Luigi University Hospital, University of Turin, Orbassano, 10043 Turin, Italy
9. Department of Preventive and Environmental Science, University of Ferrara, 44121 Ferrara, Italy