1. Department of Pediatric Oncology and Hematology, University Hospital, University of Cologne
2. Department of Pediatric Oncology and Hematology, Charité University Hospital Berlin
3. Department of Pediatric Surgery, Dr. von Hauner’sches Kinderspital, LMU Munich
4. Department of Pediatric Surgery and Pediatric Urology, University Hospital Tübingen
5. Department of Nuclear Medicine, University Hospital, University of Cologne
6. Department of Nuclear Medicine, Charité University Hospital Berlin
7. Department of Radiology, University Hospital, University of Cologne
8. Clinic for Particle Therapy, Westdeutsches Protonentherapiezentrum, University Hospital Essen
9. Kiel Pediatric Tumor Registry, Dept. for Pediatric Pathology, University Hospital of Schleswig-Holstein, Campus Kiel
10. Department of Experimental Pediatric Oncology, University Hospital, University of Cologne
11. Pediatric Oncology and Hematology, University Hospital Schleswig-Holstein, Campus Lübeck
12. Department of Pediatrics and Pediatric Oncology and Hematology, University Medicine Greifswald