1. Department of Neurosurgery, The Walton Centre NHS Foundation Trust, Liverpool, UK
2. Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
3. Department of Neurosurgery, North Staffordshire Hospital Trust, Stoke on Trent, UK
4. Department of Neurosurgery, Aberdeen Royal Infirmary, Aberdeen, UK
5. Department of Neurosurgery, Alder Hey Children's NHS Foundation Trust, Liverpool, UK
6. Department of Neurosurgery, Queen’s Medical Centre, Nottingham, UK
7. Department of Neurosurgery, Beaumont Hospital, Dublin, Republic of Ireland
8. Department of Neurosurgery, University Hospital of Wales, Cardiff, UK
9. Department of Neurosurgery, Royal Victoria Infirmary, Newcastle upon Tyne, UK
10. Department of Neurosurgery, Ninewells Hospital, Dundee, UK
11. Manchester Centre for Clinical Neurosciences, Salford Royal NHS Foundation Trust, Salford, UK
12. Wessex Neurological Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK
13. Department of Neurosurgery, Royal Preston Hospital, Preston, UK
14. Department of Neurosurgery, Royal Hallamshire Hospital, Sheffield, UK
15. Department of Neurosurgery, Leeds General Infirmary, Leeds, UK
16. Department of Neurosurgery, The James Cook University Hospital, Middlesbrough, UK
17. Department of Neurosurgery, John Radcliffe Hospital, Oxford, UK
18. Department of Neurosurgery, Hull Royal Infirmary, Hull, UK