Department of Pediatric Oncology, Hematology and Immunology, University Hospital of Heidelberg, Heidelberg, Germany , Molecular Medicine Partnership Unit, Heidelberg, Germany , European Molecular Biology Laboratory, Heidelberg, Germany.|Institute of Molecular Biology (IMB), Mainz, Germany , BioQuant, Heidelberg, Germany.|Department of Pediatric Oncology, Hematology and Immunology, University Hospital of Heidelberg, Heidelberg, Germany , Molecular Medicine Partnership Unit, Heidelberg, Germany , European Molecular Biology Laboratory, Heidelberg, Germany.|Department of Pediatric Oncology, Hematology and Immunology, University Hospital of Heidelberg, Heidelberg, Germany , Molecular Medicine Partnership Unit, Heidelberg, Germany , European Molecular Biology Laboratory, Heidelberg, Germany.|Institute of Molecular Biology (IMB), Mainz, Germany , BioQuant, Heidelberg, Germany.