1. Department of Neurosurgery, Royal Hallamshire Hospital, Sheffield, UK
2. Department of Neurosurgery, Leeds General Infirmary, Leeds, UK
3. School of Medicine, University of Leeds, Leeds, UK
4. Department of Histopathology, St. James’s University Hospital, Leeds, UK
5. Department of Oncology, St. James’s University Hospital, Leeds, UK
6. Department of Cytogenetics, St. James’s University Hospital, Leeds, UK