1. Department of Human Genetics, University Medical Center, Göttingen 37073, Germany
2. Institute of Pathology, University Medical Center Mannheim, Mannheim 68167, Germany
3. Clinic for Internal Medicine III, Hematology and Medical Oncology, University Regensburg, Regensburg 93053, Germany
4. Department of Hematology/Medical Oncology, University Medical Center Göttingen, Göttingen 37099, Germany
5. Institute of Anatomy and Cell Biology, University Medical Center Göttingen, Göttingen 37075, Germany
6. Center of Medical Research, Bioinformatic and Statistic, Medical Faculty Mannheim, Mannheim 68167, Germany
7. Institute for Cellular and Molecular Immunology, University Medical Center Göttingen, Göttingen 37073, Germany
8. Kiel Paediatric Tumor Registry, Department of Paediatric Pathology, University Hospital Schleswig-Holstein, Kiel 24105, Germany