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