1. Institute of Pathology, Ludwig-Maximilians-University Munich, 80337 Munich, Germany
2. Institute of Pathology, Klinikum Kaufbeuren-Ravensburg, 87600 Kaufbeuren, Germany
3. Institute of Pathology, University Hospital Erlangen, 91054 Erlangen, Germany
4. Department of Pathology, Bambino Gesu Children’s Hospital, IRCCS, 00165 Rome, Italy
5. Department of Pediatric Hematology and Oncology, Cell and Gene Therapy, Bambino Gesu Children’s Hospital, IRCCS, 00165 Rome, Italy
6. Department of Life Sciences and Public Health, Catholic University of the Sacred Heart, 00168 Rome, Italy
7. Institute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital, Lausanne University, CH-1011 Lausanne, Switzerland
8. Department of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, Medical Center, Faculty of Medicine, University of Freiburg, 79110 Freiburg, Germany
9. German Cancer Consortium (DKTK), Partner Site Munich, and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
10. German Cancer Consortium (DKTK), Heidelberg and Freiburg, 79106 Freiburg, Germany