1. Department of Surgery, Royal Victoria Infirmary, Newcastle-upon-Tyne, UK,
2. Department of Neuropathology, James Cook University Hospital, Middlesbrough, UK,
3. Department of Radiology James Cook University Hospital, Middlesbrough, UK,
4. Department of Oncology, James Cook University Hospital, Middlesbrough, UK,
5. Department of Oncology, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom,
6. Department of Neurosurgery, Bezmialem Vakif University Hospital, Istanbul, Turkey.