1. Department of Paediatrics I, Paediatric Haematology/Oncology, ALL-BFM Study Group, University Medical Centre Schleswig-Holstein, Kiel, Germany
2. Department of Evolutionary Ecology and Genetics, Zoological Institute, University of Kiel, Germany
3. Medical Department II, Haematology and Oncology, University Medical Centre Schleswig-Holstein, Kiel, Germany
4. Institute of Immunology, Ulm University Medical Centre, Ulm, Germany
5. Division of Antibody-Based Immunotherapy, Department of Medicine II, Christian Albrechts University Kiel and University Medical Centre Schleswig-Holstein, Germany
6. Faculty of Medicine, Otto-von-Guericke University, Magdeburg, Germany
7. Department of Paediatric Oncology, Haematology and Clinical Immunology, Medical Faculty, Heinrich Heine University Düsseldorf, Germany