1. Department of Biomedicine University of Bergen Bergen Norway
2. NorLux Neuro‐Oncology Laboratory Department of Oncology Centre de Recherche Public de la Santé (CRP‐Santé) Luxembourg Luxembourg
3. Department of Neurosurgery Haukeland University Hospital Bergen Norway
4. The Gade Institute/Section of Pathology Institute of Medicine University of Bergen Bergen Norway
5. Department of Pathology Haukeland University Hospital Bergen Norway
6. Department of Genetics and Pathology Uppsala University Uppsala Sweden
7. Section for Cancer Cytogenetics Oslo University Hospital The Norwegian Radium Hospital Oslo Norway