1 Department of Paediatric Laboratory Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada.
2 Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, USA.
3 Department of Neuropathology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.
4 German Cancer Consortium (DKTK), Partner Site Berlin, German Cancer Research Center (DKFZ), Heidelberg, Germany.
5 Department of Neuropathology, University Hospital Heidelberg, Heidelberg, Germany.
6 Clinical Cooperation Unit Neuropathology, German Consortium for Translational Cancer Research (DKTK), Deutsches Krebsforschungszentrum (DKFZ), Heidelberg, Germany.
7 Department of Pathology, Mayo Clinic, Rochester, Minnesota, USA.
8 Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum, Bologna, Italy.
9 Neuro-Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, USA.
10 UCL GOS Institute of Child Health and Department of Histopathology, Great Ormond Street Hospital for Children, London, UK.
11 Division of Pediatric Glioma Research, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Heidelberg, Germany.
12 Department of Laboratory Medicine and Pathology (Neuropathology), Tokyo Metropolitan Neurological Hospital, Tokyo, Japan.
13 Department of Pathology, Massachusetts General Hospital, Brigham and Women's Hospital, and Harvard Medical School, Boston, Massachusetts, USA.
14 Department of Neurology, Neurosurgery, and Pediatrics, University of California San Francisco, San Francisco, California, USA.
15 Department of Pediatric, University of Zurich, Zurich, Switzerland.
16 Division of Neuropathology, Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
17 Department of Pathology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.
18 Department of Pathology, University of California San Francisco, San Francisco, California, USA.
19 Hopp Children's Cancer Center Heidelberg (KiTZ), Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Heidelberg, Germany.
20 Department of Pediatric Hematology and Oncology, Heidelberg University Hospital and National Center for Tumor Diseases (NCT), Heidelberg, Germany.
21 Department of Pathology, All India Institute of Medical Sciences, New Delhi, India.
22 Department of Pathology, New York University Langone Health and Grossman School of Medicine, New York, New York, USA.
23 Department of Pathology, Stanford University School of Medicine, Stanford, California, USA.
24 Department of Neuropathology, GHU Paris-Psychiatry and Neuroscience, Sainte-Anne Hospital, Paris, France.
25 Department of Pathology, Amsterdam University Medical Centers/VU University, Amsterdam, The Netherlands.
26 Laboratory for Childhood Cancer Pathology, Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands.
27 Department of Neuropathology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.