1. Department of Neurosurgery, The Walton Centre NHS Foundation Trust, Liverpool, UK
2. School of Life Sciences, University of Liverpool, Liverpool, UK
3. University Neurosurgical Center Holland, Leiden University Medical Centre, Haaglanden Medical Center, Haga Teaching Hospitals, Leiden, The Netherlands
4. Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands
5. Department of Neurology, The Walton Centre NHS Foundation Trust, Liverpool, UK
6. Institute of Systems, Molecular, & Integrative Biology, University of Liverpool, Liverpool, UK