1. Department of Surgical Oncological and Gastrointestinal Science University of Padova Padova Italy
2. Department of Surgery The Ohio State Wexner Medical Center Columbus Ohio USA
3. Department of Surgery Stanford University Stanford California USA
4. Department of Surgery Washington University School of Medicine Saint Louis Missouri USA
5. Division of Surgical Oncology, Department of Surgery University of Wisconsin Madison Wisconsin USA
6. Department of Surgery Wake Forest University Winston‐Salem North Carolina USA
7. Department of Surgery Johns Hopkins Hospital Baltimore Maryland USA
8. Department of Surgery Emory University Atlanta Georgia USA