1. Colorectal Department; Whipps Cross University Hospital; Barts Health; London UK
2. University of Rome Tor Vergata; Rome Italy
3. Department of Surgery; Aarhus University Hospital; Aarhus Denmark
4. General Surgery Department; Ospedale Santa Maria degli Angeli; Pordenone Italy
5. Department of Colorectal Surgery; King's College Hospital; London UK
6. Surgery Unit; San Pio X Hospital; Milan Italy
7. Leicester General Hospital; Leicester UK
8. Department of Gastrointestinal Surgery; Aalborg University Hospital; Aalborg Denmark
9. NUTH Foundation Trust; Newcastle UK
10. Ninewells Hospital and Medical School; Dundee Scotland UK