[1] Univ Diderot, Hop St Louis, APHP, INSERM,Gastroenterol, Paris, France
[2] Hop Beaujon, Gastroenterol, Clichy, France
[3] CHU Lyon, Gastroenterol, Lyon, France
[4] CHU Amiens, Gastroenterol, Amiens, France
[5] CHU Lille, Gastroenterol, F-59037 Lille, France
[6] Hop Lariboisiere, Gastroenterol, F-75475 Paris, France
[7] CHU Amiens, Gastroenterol, Amiens, France
[8] CH Nice, Gastroenterol, Nice, France
[9] Hop St Antoine, APHP, Gastroenterol, F-75571 Paris, France
[10] CHU Clermont Ferrand, Bacteriol, Clermont Ferrand, France
[11] CHU Nice, Pathol, F-06202 Nice, France
[12] Hop Beaujon, APHP, Gastroenterol, Cichy, France