[1] Hop Univ Paris Sud Bicetre, AP HP, Dept Paediat Surg, Le Kremlin Bicetre, France
[2] Ctr Hosp Rene Dubos, Dept Surg, Pontoise, France
[3] Ctr Hosp Charleroi, Dept Paediat Surg, Charleroi, Belgium
[4] Hop Univ Paris Sud Bicetre, AP HP, Dept Paediat Hepatol, Le Kremlin Bicetre, France
[5] Hop Univ Paris Sud Bicetre, AP HP, Dept Paediat Radiol, Le Kremlin Bicetre, France
[6] Hop Univ Paris Sud Bicetre, AP HP, Dept Biostat & Clin Res, Le Kremlin Bicetre, France