1 Service de chirurgie digestive et hépatobiliaire, CHU Estaing Clermont Ferrand, 1, place Lucie-et-Raymond-Aubrac, 63003 Clermont Ferrand, France.
2 Service de chirurgie digestive et hépatobiliaire, CHU Estaing Clermont Ferrand, 1, place Lucie-et-Raymond-Aubrac, 63003 Clermont Ferrand, France. Electronic address: kslim@chu-clermontferrand.fr.