1. Department of Surgical Oncology, Medical University of Lublin, Lublin, Poland
2. Department of Preclinical Sciences, Body Composition Research Laboratory, Medical University of Lublin, Lublin, Poland
3. Department of Surgical Oncology, The Netherlands Cancer Institute—Antoni van Leeuwenhoek Hospital, Amsterdam, the Netherlands
4. Department of Surgery, University Medical Center, Amsterdam, The Netherlands
5. Department of Digestive Surgery, Hospital Universitario del Mar, Barcelona, Spain
6. Department of Clinical and Experimental Sciences, Surgical Clinic, University of Brescia, and Third Division of General Surgery, Spedali Civili di Brescia, Brescia, Italy
7. Department of General Surgery, Morgagni-Pierantoni Hospital, Forlì, Italy
8. Agaplesion Markus Krankenhaus, Frankfurt, Germany
9. Department of General, Visceral and Thoracic Surgery, Agaplesion Markus Hospital, Frankfurt, Germany
10. Department of Surgery, Jagiellonian University Medical College
11. Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital of Leipzig, Leipzig, Germany
12. Department of Digestive and Oncological Surgery, University Lille, and Claude Huriez University Hospital, Lille, France
13. General Surgery Department, Hospital Garcia de Orta, Lisbon, Portugal
14. Department of Upper Gastrointestinal and General Surgery, Guy’s and St Thomas’ Hospital, London, UK; School of Cancer and Pharmaceutical Sciences, King’s College; Department of Molecular Medicine and Surgery and Upper Gastrointestinal Surgery, Karolinska Institute, Stockholm, Sweden, London, UK
15. Department of Surgery, Royal Marsden NHS Foundation Trust, London, United Kingdom
16. Digestive Surgery, European Institute of Oncology, IRCCS, Milan, Italy
17. Department of Gastrointestinal Surgery, San Raffaele Hospital, Milan, Italy
18. Department of Surgery, TUM School of Medicine, Technical University of Munich, Germany
19. Department of Surgical Oncology, Experimental Pathology and Therapeutics Group, Portuguese Institute Of Oncology, Porto, Portugal
20. Department of General Surgery, Fondazione Policlinico Gemelli, Rome, Italy
21. Department of General Surgery, Erasmus Medical Center, Rotterdam, The Netherlands
22. Surgical Oncology and Digestive Surgery, Department of Oncology, University of Turin, San Luigi University Hospital, Orbassano, Turin 10049, Italy
23. Department of Surgery, General and Upper G.I. Surgery Division, University of Verona, Verona, Italy
24. Department of General and Oncological Surgery, Wroclaw Medical University, Wroclaw, Poland
25. Department of Infectious Diseases and Pulmonary Medicine, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany