[1] Hop Necker Enfants Malad, Paris 15, France
[2] Inst Curie, Paris 15, France
[3] Inst Gustave Roussy, Villejuif, France
[4] Beaujon Hosp, HBP Surg Ple Malad Appareil Digestif, Clichy, France
[5] Leon Berard Inst, Lyon, France
[6] CHR Citadelle, Liege, Belgium
[7] CHU, Montpellier, France
[8] CHU, Nancy, France
[9] CHU Angers, Angers, France
[10] CHU Minjoz, Besancon, France
[11] CHU Grenoble, F-38043 Grenoble, France
[12] Aix Marseille Univ, Marseille, France
[13] APHM Hpital Enfants La Timone, Marseille, France