1. Department of Gastrointestinal Surgery, St Olav’s Hospital, Trondheim University Hospital , Trondheim , Norway
2. Department of Surgery, New York Medical College, Westchester Medical Center , Valhalla, New York , USA
3. Division of Colon and Rectal Surgery, Harbor-UCLA Medical Center , Torrance, California , USA
4. Department of Surgery, Josep Trueta Hospital , Girona , Spain
5. Department of Surgery, Yeditepe University Hospital , Istanbul , Turkey
6. Department of Surgery and Translational Medicine, Careggi Hospital, University of Florence , Florence , Italy
7. Division of Colorectal Surgery, Cedar Sinai Medical Center , Los Angeles, California , USA
8. Department of Surgery, Linköping University Hospital , Linköping , Sweden
9. Department of Surgery, Jacobi Medical Center, New York City Health Hospitals , New York, New York , USA