1 Department of Surgery and Transplantation, University of Zurich, Zurich, Switzerland.
2 Institute of Epidemiology, Biostatistics and Prevention, University of Zurich, Zurich, Switzerland.
3 Department of Visceral Surgery and Transplantation, University Hospital Zurich, Zurich, Switzerland.
4 Wyss Zurich Translational Centre, University of Zurich and ETH Zurich, Zurich, Switzerland.
5 Department of General and Abdominal Surgery, Cantonal Hospital Lucerne, Lucerne, Switzerland.
6 Department of Surgery, Yonsei University College of Medicine and Severance Hospital, Seoul, South Korea.
7 Department of Surgery, Seoul National University College of Medicine, Jongno-gu, South Korea.
8 Department of Surgery, Meander Medical Centre, Amersfoort, The Netherlands.
9 Department of Surgery, University Medical Centre Groningen, Groningen, The Netherlands.
10 Section of Colorectal Surgery, Hospital Italiano de Buenos Aires and Instituto de Medicina Traslacioal e Ingeniería Biomédica (IMTIB), Buenos Aires, Argentina.
11 Department of Biomedical Sciences, Humanitas University, Milan, Italy.
12 Department of Colorectal Surgery, St Mark's Hospital, London, UK.
13 Department of General and Digestive Surgery and IDIBELL, Bellvitge University Hospital and University of Barcelona, Barcelona, Spain.
14 Ellen Leifer Shulman and Steven Shulman Digestive Disease Centre, Cleveland Clinic Florida, Weston, Florida, USA.
15 Department of Surgery, Florida Atlantic University, Boca Raton, Florida, USA.
16 Department of Surgery, Keio University School of Medicine, Tokyo, Japan.
17 Colorectal Cancer Reference Centre, A. C. Carmago Cancer Centre, Sao Paulo, Brazil.
18 Colorectal Surgery Unit, University Hospital Saint-Luc, Brussels, Belgium.
19 Department of Colorectal Surgery, National University Health System, Singapore.
20 Department of Surgical Oncology, Tata Memorial Hospital and Homi Bhabha National Institute, Mumbai, India.
21 Department of Colorectal Surgery, Royal Prince Alfred Hospital, Sydney Local Health District, Sydney, New South Wales, Australia.
22 Department of Visceral Surgery, Lausanne University Hospital, Lausanne, Switzerland.
23 Department of Colorectal Surgery, Beaujon Hospital and University of Paris, Clichy, France.
24 Department of Colorectal Surgery, National Cancer Centre-Hospital East, Chiba, Japan.
25 Department of Surgery, St Vincent's Hospital, Dublin, Ireland.
26 Department of Surgery, National University of Singapore Yong Loo Lin School of Medicine, Singapore.
27 Section of Colorectal Surgery, University of British Columbia and St Paul's Hospital, Vancouver, British Columbia, Canada.
28 Division of Colon and Rectal Surgery, Department of Surgery, IRCCS Humanitas Research Hospital, Milan, Italy.