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

University of Amsterdam - University Medical Center, Netherlands Comprehensive Cancer Organisation, University of Lausanne - Lausanne University Hospital, Radboud University Nijmegen - Radboud Institute for Health Sciences, Netherlands Comprehensive Cancer Organisation, Netherlands Comprehensive Cancer Organisation, University of Amsterdam - Cancer Center Amsterdam, University of Amsterdam - Department of Surgery and University of Amsterdam - Department of Surgery

affiliation not provided to SSRN, Maastricht University - GROW School for Oncology and Reproduction, Utrecht University - University Medical Center (Utrecht), University of Amsterdam - Cancer Center Amsterdam, University of Amsterdam - University Medical Center, University of Amsterdam - University Medical Center, University of Amsterdam - Department of Surgery, affiliation not provided to SSRN, Utrecht University - University Medical Center (Utrecht), Utrecht University - Department of Upper Gastrointestinal Surgery, affiliation not provided to SSRN, Erasmus University Rotterdam (EUR), Radboud University Nijmegen - Radboud University Medical Center, Radboud University, Radiotherapiegroep, affiliation not provided to SSRN, Maastricht University, Netherlands Comprehensive Cancer Organisation, University of Groningen - University Medical Center Groningen, University of Groningen, affiliation not provided to SSRN and affiliation not provided to SSRN