University of Amsterdam - Amsterdam UMC, University of Amsterdam - Amsterdam UMC, University of Amsterdam - Amsterdam UMC, University of Amsterdam - Amsterdam UMC, University of Insubria, Linkoping University - Linköping University Hospital, University of Pisa - Department of Translational Research on New Technologies in Medicine and Surgery, University of Gothenburg - Sahlgrenska University Hospital, University of Amsterdam - Amsterdam UMC, Pederzoli Hospital-Peschiera del Garda, Istituto Clinico Humanitas, Università di Bologna, Beaujon Hospital, University of Oslo - Institute of Clinical Medicine, University Hospital of Verona, Università Vita-Salute San Raffaele - IRCCS Ospedale San Raffaele, Grande Ospedale Metropolitano Niguarda, University of Hamburg - University Medical Center Hamburg-Eppendorf, University of Amsterdam - Cancer Center Amsterdam, Erasmus University Rotterdam (EUR) - Department of Surgery, University of Groningen - Department of Surgery, Schleswig-Holstein University, University of Oslo - Oslo University Hospital, University of Helsinki, Emory University - Emory University Hospital, Medisch Spectrum Twente, Catharina Hospital - Department of Surgery, Fondazione Poliambulanza Istituto Ospedaliero, University of Birmingham, King’s College London - Institute of Liver Studies, University Medical Center Utrecht, University Hospital of Verona, Università Vita-Salute San Raffaele - IRCCS Ospedale San Raffaele, University of Southampton, Regione Emilia-Romagna - Division of Pancreatic Surgery, University Hospital of Orléans - Department of Digestive and Endocrine Surgery, University of Verona - Department of General and Pancreatic Surgery, Linkoping University - Linköping University Hospital, Government of the United Kingdom - Royal Free London NHS Foundation Trust, University of Ljubljana - University Medical Centre Ljubljana, UKSH Campus Lübeck - Department of Surgery, Istituto Clinico Humanitas, Fondazione Poliambulanza Istituto Ospedaliero, University of Amsterdam - Department of Clinical Epidemiology, Biostatistics and Bioinformation, University of Amsterdam - Amsterdam University Medical Centers, University of Jordan and Independent

University of Oxford - Nuffield Department of Surgical Sciences, Utrecht University - Department of Upper Gastrointestinal Surgery, Utrecht University - Department of Upper Gastrointestinal Surgery, Catharina Hospital - Department of Surgery, Catharina Hospital - Department of Surgery, Zuyderland Medical Center - Department of Surgery, Zuyderland Medical Center - Department of Surgery, Erasmus University Rotterdam (EUR) - Department of Surgery, Erasmus University Rotterdam (EUR) - Department of Surgery, Leiden University - Department of Surgery, Leiden University - Department of Surgery, ZGT Hospitals - Department of Surgery, Gelre Hospital - Department of Surgery, Meander Medical Center - Department of Surgery, University of Amsterdam - Department of Surgery, University of Amsterdam - Department of Surgery, University of Amsterdam - Department of Surgery, Utrecht University - Julius Center for Health Sciences and Primary Care, Utrecht University - Department of Upper Gastrointestinal Surgery, Utrecht University - Department of Surgery, Independent and Independent