Affiliation: | 1.Department of Surgery, Hull University Teaching Hospital, Hull, UK ;2.Department of Health Sciences, University of York, York, UK ;3.Department of Surgery, Manchester University NHS Hospitals Foundation Trust, Manchester, UK ;4.Department of Neurosurgery, Royal Preston Hospital, Lancashire Teaching Hospitals NHS Foundation Trust, PR2 9HT, Preston, UK ;5.Department of Radiology, Royal Preston Hospital, Lancashire Teaching Hospitals NHS Foundation Trust, Preston, PR2 9HT, UK ; |