1 Department of General and Digestive Surgery, University Hospitals of Strasbourg, hôpital de Hautepierre, avenue Molière, 67098 Strasbourg cedex, France. Electronic address: [email protected].
2 Department of General and Digestive Surgery, University Hospitals of Strasbourg, hôpital de Hautepierre, avenue Molière, 67098 Strasbourg cedex, France.