1. Department of Oncology and Children's Research Center University Children's Hospital of Zurich Zurich Switzerland
2. Clinic of Pediatrics Pediatric Institute of Southern Switzerland, EOC Bellinzona Switzerland
3. Institute of Neuropathology University Hospital Zurich Zurich Switzerland
4. Institute of Medical Genetics University of Zurich Zurich Switzerland
5. Department of Neuropathology Institute of Pathology Basel University Hospital Basel Switzerland
6. Department of Diagnostic Imaging University Children's Hospital Zurich Zurich Switzerland
7. Department of Neurology, Inselspital Bern University Hospital, and University of Bern Bern Switzerland
8. Faculty of Biomedical Sciences Università della Svizzera Italiana Lugano Switzerland