1. Department of Pediatrics and Adolescent Medicine; Division of Pediatric Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg; Freiburg Germany
2. German Cancer Consortium (DKTK); Partner site Freiburg; Freiburg Germany
3. Comprehensive Cancer Center Freiburg; Freiburg Germany
4. Institute of Molecular Medicine and Cell Research; University of Freiburg; Freiburg Germany
5. Institute of Surgical Pathology; Medical Center and Faculty of Medicine, University of Freiburg; Freiburg Germany
6. German Cancer Research Center (DKFZ); Heidelberg Germany
7. Department of Hematology, Oncology and Stem Cell Transplantation; Medical Center, University of Freiburg; Freiburg Germany
8. Klinikum Stuttgart, Zentrum für Kinder und Jugendmedizin; Olgahospital, Pediatrics 5 (Pediatric Oncology, Hematology, Immunology); Stuttgart Germany
9. Department of Pediatric Oncology; University Children's Hospital; Tuebingen Germany
10. Dermapathologische Gemeinschaftspraxis; Friedrichshafen Germany
11. Lübeck Institute of Experimental Dermatology; Lübeck Germany