1. Division of Pediatric Hematology, Oncology and Stem Cell Transplantation, Medical Faculty, RWTH Aachen University , Aachen, Germany
2. Children’s Hospital München-Schwabing, Technische Universität, München, Germany
3. Prof.-Hess-Kinderklinik, Klinikum Bremen-Mitte, Bremen, Germany
4. Department of Radiotherapy and Radiation Oncology, Hannover Medical School, Hannover, Germany
5. Pathogenesis of Virus Associated Tumors (F100), German Cancer Research Center, Heidelberg, Germany
6. Medical Faculty, Department of Radiation Oncology, RWTH Aachen University, Aachen, Germany
7. Pediatric Hematology, Oncology and Stem Cell Transplantation, Dr. von Hauner’sches Kinderspital, Ludwig-Maximilians-University, München, Germany
8. Department of Radiotherapy, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
9. Department of Pediatrics, Maastricht University Medical Center, Maastricht, Netherlands
10. Hannover Medical School, Pediatric Hematology/Oncology, Hannover, Germany
11. Kindertumorregister der GPOH, Sektion Kinderpathologie, Universitätsklinikum Schlewig-Holstein, Campus Kiel, Kiel, Germany
12. Department of Nuclear Medicine, Medical Faculty, RWTH Aachen University, Aachen, Germany
13. Medical School Hannover, Institute of Virology, Hannover, Germany
14. Section of Paediatric Radiology, University Medical Center Mainz, Mainz, Germany
15. University Essen, Westgerman Protontherapycenter Essen, Essen, Germany
16. Pediatric Oncology, Otto von Guericke University Childrens Hospital, Magdeburg, Germany
17. Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, Medical Faculty, RWTH Aachen University, Aachen, Germany
18. Radiologie München, Burgstraße 7, München, Germany