University of Amsterdam, Amsterdam Medical Center, Department of Surgery, University of Amsterdam, Amsterdam Medical Center, Department of Surgery, University of Amsterdam - Department of Oncology, Netherlands Cancer Institute - Department of Pathology, University of Amsterdam - Department of Radiation Oncology, Netherlands Cancer Institute, Erasmus University Rotterdam (EUR) - Department of Surgery, Radboud University Nijmegen - Radboud University Medical Center, Catharina Hospital, Bravis Hospital, Maasziekenhuis Pantein, Onze Lieve Vrouwen Gasthuis, Utrecht University - University Medical Center (Utrecht), University of Groningen - University Medical Center Groningen (UMCG), Catharina Hospital, Netherlands Cancer Institute, University of Amsterdam, Amsterdam Medical Center, Department of Surgery, Bernhoven, Free University, Amsterdam, Flevo Hospital, Isala Hospital, St. Antonius Hospital, Elisabeth-Tweesteden Hospital, Amstelland Hospital, University of Amsterdam - Department of Clinical Epidemiology, Biostatistics and Bioinformation, University of Amsterdam, Amsterdam Medical Center, Department of Surgery and Independent

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