1 Digestive Cancer Registry of Burgundy, University Hospital Dijon, INSERM U866, University of Burgundy, 7, bd Jeanne d'Arc, BP 87900, 21079, Dijon Cedex, France.
2 Digestive Cancer Registry of Burgundy, University Hospital Dijon, INSERM U866, University of Burgundy, 7, bd Jeanne d'Arc, BP 87900, 21079, Dijon Cedex, France. valerie.jooste@u-bourgogne.fr.