1. Division of Surgical Oncology and Digestive Surgery Department of Oncology San Luigi University Hospital University of Turin Turin Italy
2. Division of Gastrointestinal Surgery San Raffaele Hospital Milan Italy
3. Department of Surgical Oncology IRCCS Istituto Tumori ‘G. Paolo II’ Bari Italy
4. Department of Oncology University of Turin Turin Italy
5. Fondazione Policlinico Gemelli—IRCCS AREA di Chirurgia Addominale Rome Italy
6. General and Oncologic Surgery Morgagni‐Pierantoni HospitalAusl Romagna Forlì Italy
7. Fondazione Policlinico Universitario A. Gemelli—IRCCS Chirurgia Generale Presidio Columbus Rome Italy
8. Surgical Oncology Surgery IRCCS Policlinico San Martino Genoa Italy
9. Department of Surgery S. Croce e Carle Hospital Cuneo Italy
10. Department of Clinical Medicine and Surgery Department of Gastroenterology, Endocrinology and Endoscopic Surgery University of Naples ‘Federico II’ Naples Italy
11. Division of General and Hepatobiliary Surgery Department of Surgical Sciences Dentistry, Gynaecology and Paediatrics University of Verona Verona Italy
12. Colorectal Surgical Oncology Abdominal Oncology Department Fondazione Giovanni Pascale IRCCS Naples Italy
13. Fondazione Policlinico Universitario A. Gemelli—IRCCS Chirurgia Generale Presidio Columbus Università Cattolica del Sacro Cuore Rome Italy
14. Division of Gastrointestinal Surgery San Raffaele Hospital Vita Salute University Milan Italy