Radboud University Nijmegen - Radboud University Medical Center, Radboud University Nijmegen - Radboud University Medical Center, University of Groningen - University Medical Center Groningen, Netherlands Cancer Institute, Dresden University of Technology - OncoRay Value Based Innovation, University of Groningen - Department of Radiation Oncology, Maastricht University, Princess Margaret Hospital, Maastricht University, Dresden University of Technology, Netherlands Cancer Institute, Netherlands Cancer Institute - Division of Medical Oncology and Radboud University Nijmegen - Radboud University Medical Center

Maastricht University, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Maastricht University, affiliation not provided to SSRN, Maastricht University, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Groningen - Department of Radiation Oncology, University of Groningen - University Medical Center Groningen, affiliation not provided to SSRN, Gustave Roussy and Maastricht University

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