1 Department of Digestive Surgery, Hôpital Charles Nicolle, Rouen University Hospital, 1 rue de Germont, F-76031, Rouen Cedex, France.
2 Department of Digestive Surgery, Hôpital Charles Nicolle, Rouen University Hospital, 1 rue de Germont, F-76031, Rouen Cedex, France. jean-jacques.tuech@chu-rouen.fr.