1 Digestive Cancer Registry of Burgundy, INSERM UMR 1231 EPICAD, University of Bourgogne-Franche Comté, University Hospital of Dijon, Dijon, France; CHU de Bordeaux, Haut-Lévêque Hospital, Department of Radiotherapy, Pessac, 33604, France; Gastroenterology and Hepatology Department, Centre Hospitalo-Universitaire de Nancy, Vandoeuvre-lès-Nancy, France; Department of Radiotherapy, Centre A Lacassagne, Nice, France; Department of Hepatogastroenterology and Digestive Oncology and Gastroenterology, University Hospital of Dijon, University of Bourgogne-Franche Comté, 14 Rue Paul Gaffarel, 21000 Dijon, France. Electronic address: come.lepage@u-bourgogne.fr.
2 Digestive Cancer Registry of Burgundy, INSERM UMR 1231 EPICAD, University of Bourgogne-Franche Comté, University Hospital of Dijon, Dijon, France.