[1] Univ Lille 2, INSERM, U995, Lille, France
[2] Inserm ATIP Avenir, U738, Paris, France
[3] Hop Claude Huriez, Serv Malad Appareil Digestif & Nutr, Lille, France
[4] Hop Jean Verdier, Serv Hepatogastroenterol, Bondy, France
[5] Ctr Hosp Intercommunal, Creteil, France
[6] INSERM, U866, Registre Canc Digestifs, Dijon, France
[7] UCB, INSERM, U1086, Caen, France
[8] Hop Bichat Claude Bernard, Serv Malad Infect & Trop, F-75877 Paris 18, France