[1] CHU Lille, Gastroenterol, Lille, France
[2] Lille 2 Univ, CHU Lille, EPIMAD Registry, Epidemiol Unit, Lille, France
[3] CHU Caen, Pediat Unit, Caen, France
[4] CHU Lille, Pediat Unit, Lille, France
[5] CH Le Havre, Pediat Unit, Le Havre, France
[6] GHICL, Pediat Unit, Lille, France
[7] CHU Rouen, Gastroenterol, Rouen, France
[8] CHU Amiens, Gastroenterol, Amiens, France
[9] CHU Rennes, Gastroenterol, Rennes, France