1. Division of General and Gastrointestinal Surgery Center for Surgery and Public Health Department of Surgery Brigham and Women's Hospital Harvard Medical School Boston Massachusetts USA
2. Division of General and Gastrointestinal Surgery Department of Surgery Brigham and Women's Hospital Harvard Medical School Boston Massachusetts USA
3. Kyiv Regional Oncology Center Hepato‐Pancreato‐Biliary Surgery Department Kyiv Ukraine
4. Division of Cancer Medicine Department of Breast Medical Oncology University of Texas MD Anderson Cancer Center Houston Texas USA
5. Center for Surgery and Public Health Harvard Medical School Boston Massachusetts USA
6. Department of Surgery Massachusetts General Hospital Boston Massachusetts USA
7. Feofaniia Clinical Hospital Department of General Surgery and Oncology Kyiv Ukraine
8. Division of Cardiac Surgery Massachusetts General Hospital Boston Massachusetts USA
9. Division of General and Gastrointestinal Surgery Brigham and Women's Hospital Boston Massachusetts USA
10. Danylo Halytsky Lviv National Medical University Lviv Ukraine
11. Department of General, Oncological, Metabolic and Emergency Surgery University Hospital Krakow Poland
12. National Cancer Institute Kyiv Ukraine
13. Division of General and Foregut Surgery IRCCS Policlinic San Donato San Donato Milanese Italy
14. The University of Alabama at Birmingham Birmingham Alabama USA