[1] Univ Paris 11, Hop Paul Brousse, AP HP, Ctr Hepatobiliaire,Ctr Hosp,Inserm U776, Villejuif, France
[2] Hop Edouard Herriot, Serv Chirurg Gen & Digest, Lyon, France
[3] CHU Montpellier, Serv Hepatogastroenterol, Montpellier, France
[4] CHU Grenoble, Unite Chirurg Digest, F-38043 Grenoble, France
[5] Hop Beaujon, Serv Chirurg Digest, Clichy, France
[6] CHU Clermont Ferrand, Serv Chirurg Digest, Clermont Ferrand, France
[7] CHU Marseille, Serv Chirurg Gen & Digest, Marseille, France
[8] Hop ARCHET 2, Serv Chirurg Digest, Nice, France
[9] CHRU Strasbourg, Strasbourg, France
[10] Univ Hosp Leuven, Leuven, Belgium
[11] Queen Elizabeth Hosp, Queen Elizabeth Med Ctr, Birmingham B15 2TH, W Midlands, England