Histopathology 2012 Oct;61(4):751-4
National Specialist Ophthalmic Pathology Service (NSOPS), Department of Histopathology, Royal Hallamshire Hospital, SheffieldDepartment of Neuropathology, Hull Royal Infirmary, HullAcademic Units of Surgery, Department of Oncology, Faculty of Medicine Dentistry and Health Sciences, University of Sheffield, SheffieldDepartment of Biosciences, Sheffield Hallam University, SheffieldAcademic Unit of Ophthalmology and Orthoptics, Faculty of Medicine Dentistry and Health Sciences, University of Sheffield, Sheffield, UK.