1. Department of Digestive Surgery; Amiens University Hospital, Amiens Cedex 01; F-80054 France
2. Department of Anatomy and Organogenesis; UFR de médecine d'Amiens, Amiens Cedex 01; 80036 France
3. EA4294, Jules Verne University of Picardie, Amiens Cedex 01; F-80054 France
4. Clinical Research Center, Amiens University Hospital, Amiens Cedex 01; F-80054 France