[1] Univ Montpellier I, Gastroenterol & Hepatol, Montpellier, France
[2] CHU Lille, Dept Gastroenterol, Lille, France
[3] APHP Paris Sud Univ, Gastroenterol, Le Kremlin Bicetre, France
[4] Lille Univ Hosp, Dept Colorectal Surg, Lille, France
[5] North France Univ, Lille Univ Hosp, Epidemiol, Lille, France
[6] North France Univ, Lille Univ Hosp, Gastroenterol, Lille, France
[7] Mt Sinai Hosp, Gastroenterol, New York, NY 10029 USA