Woodfield J, Lammy S, Jamjoom AAB, Fadelalla MAG, Copley PC, Arora M, Glasmacher SA, Abdelsadg M, Scicluna G, Poon MTC, Pronin S, Leung AHC, Darwish S, Demetriades AK, Brown J, Eames N, Statham PFX, Hoeritzauer I, UCES Study Collaborators, British Neurosurgical Trainee Research Collaborative