[1] Trousseau Hosp, French Reference Ctr Langerhans Cell Histiocytos, Paris, France
[2] Univ Paris Saclay, UVSQ, EA4340, Boulogne, France
[3] Univ Paris Sud, Bicetre Hosp, AP HP, Pediat Hepatol, Le Kremlin Bicetre, France
[4] Necker Enfants Malad Hosp, AP HP, Pediat Gastroenterol, Hepatol Nutr, Paris, France
[5] Hop Univ Geneve, Pediat Hepatol, Geneva, Switzerland
[6] Hop Univ Geneve, Dept Pediat Hematol & Oncol, Geneva, Switzerland
[7] Ctr Hosp Univ Lille, Dept Pediat Hematol & Oncol, Lille, France
[8] Ctr Hosp Univ Nice, Dept Pediat Hematol & Oncol, Nice, France
[9] Ctr Hosp Univ Toulouse, Dept Pediat Hematol & Oncol, Toulouse, France
[10] Ctr Hosp Univ Grenoble, Dept Pediat Hematol & Oncol, Grenoble, France
[11] Ctr Hosp Univ St Etienne, Dept Pediat Hematol & Oncol, St Etienne, France
[12] Assistance Publ Hop Marseille, Dept Pediat Hematol & Oncol, Marseille, France
[13] Ambroise Pare Hosp, AP HP, Dept Pathol, Boulogne, France