1. School of Medicine, University of Central Lancashire, Preston, UK
2. Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
3. Department of Basic and Clinical Neurosciences, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
4. Department of Neurosurgery, Royal Preston Hospital, Preston, UK
5. Department of Neurosurgery, The Walton Centre NHS Foundation Trust, Liverpool, UK