1. Department of Pathology Oslo University Hospital Oslo Norway
2. University of Oslo (UiO) Oslo Norway
3. Department of Genetics and Genome Biology University of Leicester Leicester UK
4. Departments of Pathology & Genomic Medicine The University of Texas MD Anderson Cancer Center Houston TX USA
5. Institute of Neuropathology Heinrich Heine University, Medical Faculty Düsseldorf Germany
6. International Agency for Research on Cancer (IARC) World Health Organization Lyon France