[1] Turku University Hospital,Division of Digestive Surgery and Urology
[2] Oulu University Hospital and University of Oulu,Surgery Research Unit, Medical Research Center Oulu
[3] Oulu University Hospital,Department of Oncology and Radiotherapy
[4] University of Helsinki and Helsinki University Hospital,Department of Surgery
[5] University of Oulu and Oulu University Hospital,Cancer and Translational Medicine Research Unit, Medical Research Center Oulu
[6] University of Eastern Finland and Kuopio University Hospital,Department of Surgery
[7] Helsinki University Hospital and University of Helsinki,Department of Pathology, HUSLAB, HUS Diagnostic Center
[8] University of Helsinki,Applied Tumor Genomics Research Program, Research Programs Unit, Faculty of Medicine
[9] University of Helsinki and Helsinki University Hospital,Department of General Thoracic and Oesophageal Surgery, Heart and Lung Centre
[10] Central Finland Central Hospital,Department of Surgery
[11] Tampere University Hospital and University of Tampere,Department of Cardiothoracic Surgery, Heart Center
[12] Tampere University Hospital,Department of Gastroenterology and Alimentary Tract Surgery
[13] Karolinska Insitutet and Karolinska University Hospital,Upper Gastrointestinal Surgery, Department of Molecular Medicine and Surgery