[1] Lariboisiere Univ Hosp, Dept Gastroenterol, F-75010 Paris, France
[2] Hop Robert Debre, Pediat Pathol Dept, F-75019 Paris, France
[3] MS Curie Hosp, Dept Surg, Bucharest, Romania
[4] Hop Robert Debre, Dept Pediat Surg, F-75019 Paris, France
[5] Lariboisiere Univ Hosp, Haematol Dept, F-75010 Paris, France
[6] Hop Robert Debre, Pediat Gastroenterol & Nutr Dept, F-75019 Paris, France