1 Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK.
2 Oxford University Global Surgery Group, Medical Sciences Division, Nuffield Department of Surgical Sciences, University of Oxford, Oxford OX3 9DU, UK. Electronic address: nasnsiggroup@gmail.com.
3 Department of Neurosurgery, Royal Victoria Infirmary, Newcastle upon Tyne, UK.
4 Division of Neurosurgery, Department of Clinical Neurosciences, Addenbrooke's Hospital, Cambridge, UK; NIHR Global Health Research Group on Neurotrauma, University of Cambridge, Cambridge, UK.