1. Department of Surgery, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
2. Department of Surgery, the Netherlands Cancer Institute–Antoni van Leeuwenhoek, Amsterdam, the Netherlands
3. Department of Surgery, Amsterdam University Medical Center, location AMC, University of Amsterdam, Cancer Center Amsterdam, Amsterdam, the Netherlands
4. Department of Surgery, Catharina Hospital, Eindhoven, the Netherlands
5. Department of Surgery, Erasmus MC University Medical Center Rotterdam, the Netherlands
6. Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands
7. Department of Surgery, Zuyderland MC, Sittard-Geleen, the Netherlands
8. Department of Surgery, Rijnstate Hospital, Arnhem, the Netherlands
9. Department of Surgery, ZGT hospital, Almelo, the Netherlands
10. Department of Surgery, Amsterdam University Medical Center, location VUmc, Cancer Center Amsterdam, Amsterdam, the Netherlands
11. Department of Pathology, Amsterdam University Medical Center, location VUmc, Cancer Center Amsterdam, Amsterdam, the Netherlands
12. Department of Surgery, Elisabeth Twee-Steden Hospital, Tilburg, the Netherlands
13. Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
14. Department of Surgery, Medical Center Leeuwarden, Leeuwarden, the Netherlands
15. Department of Gastroenterology, Albert Schweitzer Hospital, Dordrecht, the Netherlands
16. Department of Surgery, Albert Schweitzer Hospital, Dordrecht, the Netherlands
17. Department of Surgery, Gelre Ziekenhuizen, Apeldoorn, the Netherlands
18. Prospective Observational Cohort Study of Oesophageal-Gastric Cancer Patients (POCOP) of the Dutch Upper GI Cancer Group, Amsterdam, the Netherlands
19. Department of Medical Oncology, Amsterdam University Medical Center, location AMC, Cancer Center Amsterdam, Amsterdam, the Netherlands
20. Department of Surgery, Isala Ziekenhuis, Zwolle, the Netherlands
21. Department of Gastroenterology, Maasstad Ziekenhuis, Rotterdam, the Netherlands
22. Department of Radiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
23. Department of Medical Oncology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
24. Julius Center for Health Sciences and Primary Care, Utrecht University, Utrecht, the Netherlands
25. Department of Radiology and Nuclear Medicine, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands
26. Department of Gastroenterology, Radboud University Medical Center, Nijmegen, the Netherlands
27. for the PLASTIC Study Group