1 Department of Neurosurgery, Geoffrey Jefferson Brain Research Centre, Northern Care Alliance NHS Foundation Trust, Manchester, UK.
2 Division of Immunology, Immunity to Infection and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
3 Department of Pharmacology and Therapeutics, Institute of Systems, Molecular & Integrative Biology, University of Liverpool, Liverpool, UK.
4 Department of Neurosurgery, The Walton Centre NHS Foundation Trust, Liverpool, UK.