1. Gerhard Domagk Institute of Pathology University Hospital Münster Germany
2. Institute of Pathology and Molecular Pathology Bundeswehrkrankenhaus Ulm Germany
3. Division of Translational Pathology Gerhard‐Domagk‐Institute of Pathology University Hospital Münster Germany
4. Pediatrics III West German Cancer Centre University Hospital Essen Germany
5. Institute of Pathology University Hospital Cologne Germany
6. Department of Medicine A University Hospital Münster Germany
7. Max Eder Research Group for Pediatric Sarcoma Biology Institute of Pathology Faculty of Medicine LMU Munich Germany
8. Department of Pediatric Hematology and Oncology University Children's Hospital Münster Germany
9. German Cancer Consortium (DKTK), Partner Site Munich Germany
10. German Cancer Research Center (DKFZ) Heidelberg Germany
11. Institute of Pathology Faculty of Medicine LMU Munich Germany