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.