1 Department of Digestive Surgery and Transplantation, University Hospital Center. Université de Montpellier- Nîmes, 641, avenue du Doyen Gaston-Giraud, 34090 Montpellier, France. Electronic address: t-bardol@chu-montpellier.fr.
2 Department of Digestive Surgery and Transplantation, University Hospital Center. Université de Montpellier- Nîmes, 641, avenue du Doyen Gaston-Giraud, 34090 Montpellier, France; Division of General Surgery, Department of Medical and Surgical Sciences, Hospital of Cattinara, University of Trieste, Strada di Fiume 447, 34419 Trieste, Italy.
3 Department of Digestive Surgery and Transplantation, University Hospital Center. Université de Montpellier- Nîmes, 641, avenue du Doyen Gaston-Giraud, 34090 Montpellier, France.