[1] Univ Freiburg, Univ Childrens Hosp Freiburg, Div Pediat Hematol & Oncol, Freiburg, Germany
[2] Spemann Grad Sch Biol & Med, Freiburg, Germany
[3] Stanford Univ, Sch Med, Hematol, Stanford, CA USA
[4] Univ Munster, Dept Pediat Hematol & Oncol, Munster, Germany
[5] Univ Childrens Hosp Zurich, Haematol, Zurich, Switzerland
[6] German Canc Consortium DKTK, Heidelberg, Germany
[7] German Canc Res Ctr, Heidelberg, Germany
[8] Univ Freiburg, Inst Mol Med & Cell Res, Freiburg, Germany