1. Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands
2. Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
3. Department of Gastroenterological Surgery, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo, Japan
4. Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
5. Department of Surgery, Netherlands Cancer Institute, Amsterdam, the Netherlands
6. Department of Colorectal Surgery, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
7. Center for Digestive Diseases, Department of Molecular Medicine and Surgery, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden
8. Department of Gastroenterological Surgery, Toranomon Hospital, Tokyo, Japan
9. Department of Surgery, Seoul St Mary’s Hospital, The Catholic University of Korea, Seoul, Republic of Korea
10. Department of Surgery, Royal Adelaide Hospital, University of Adelaide, Adelaide, South Australia, Australia
11. Department of Colorectal Surgery, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
12. Surgical Outcomes Research Center (SOuRCe), Sydney Local Health District, Sydney School of Public Health, University of Sydney, Sydney, New South Wales, Australia
13. Department of Medical Statistics, Leiden University Medical Center, Leiden, the Netherlands
14. Department of Surgery, Catharina Hospital, Eindhoven, the Netherlands
15. School of Oncology and Developmental Biology (GROW), Maastricht University, Maastricht, the Netherlands
16. Department of Surgery, Amsterdam University Medical Centers, location VUmc, Amsterdam, the Netherlands