St Mark's Hospital - Department of Colorectal Surgery, University of Amsterdam, Amsterdam Medical Center, Department of Surgery, Centro Hospitalar S. Joao, St Mark's Hospital, St Mark's Hospital, St Mark's Hospital, St Mark's Hospital, Imperial College London - Department of Surgery and Cancer, Imperial College, London, St Mark's Hospital, St Mark's Hospital, St Mark's Hospital, South Devon NHS Foundation Trust, St Mark's Hospital, St Mark's Hospital, University of Amsterdam and St Mark's Hospital

University of Amsterdam, Amsterdam Medical Center, Department of Surgery, University of Amsterdam, Amsterdam Medical Center, Department of Surgery, University of Amsterdam, Amsterdam Medical Center, Department of Surgery, University of Amsterdam - University Medical Center, University of Amsterdam - University Medical Center, University of Amsterdam - University Medical Center, University of Amsterdam - Department of Clinical Epidemiology, Biostatistics and Bioinformation, Onze Lieve Vrouwe Gasthuis (OLVG) - Department of Surgery, Onze Lieve Vrouwe Gasthuis (OLVG), Diakonessen Hospital, Diakonessen Hospital, Elisabeth-Tweesteden Hospital, Elisabeth-Tweesteden Hospital, Humanitas University - Humanitas Clinical and Research Hospital, Humanitas University - Humanitas Clinical and Research Hospital, Flevoziekenhuis, Flevoziekenhuis, University of Amsterdam, Amsterdam Medical Center, Department of Surgery and University of Amsterdam, Amsterdam Medical Center, Department of Surgery