[1] Ghent Univ Hosp, Dept Pediat Hematol Oncol, Ghent, Belgium
[2] EORTC Headquarters, Brussels, Belgium
[3] VUB, Brussels, Belgium
[4] Hop Univ Enfants Reine Fabiola, Hematol & Oncol Unit, Brussels, Belgium
[5] Univ Leuven, Pediat Hematol & Oncol, Leuven, Belgium
[6] Univ Hosp, Strasbourg, France
[7] Hop Robert Debre, AP HP, Dept Genet, F-75019 Paris, France
[8] CHU Toulouse, Hop Enfants, Dept Pediat Hematooncol, Toulouse, France
[9] Hop Purpan, Hematol Lab, Toulouse, France
[10] CHU Ulg CHR Citadelle, Dept Pediat Oncol, Liege, Belgium
[11] Ghent Univ Hosp, Ctr Med Genet, Ghent, Belgium