1. Department of General, Laparoscopic, Oncologic and Robotic Surgery Athens Medical Center Athens Greece
2. Department of General Surgery Hospital Universitari Vall d'Hebron Barcelona Spain
3. Leeds Institute of Biomedical and Clinical Sciences University of Leeds Leeds UK
4. Division of Surgery and Interventional Sciences University College London London UK
5. Unit of Colorectal Surgery Department of Medical, Surgical, Neurological, Metabolic and Ageing Sciences Universitá della Campania ‘Luigi Vanvitelli’ Naples Italy
6. Colorectal Unit Hospital Universitario y Politecnico La Fe University of Valencia Valencia Spain