[1] Univ Birmingham, Inst Metab & Syst Res, Coll Med & Dent Sci, Birmingham B15 2TT, W Midlands, England
[2] Univ Hosp Birmingham NHS Fdn Trust, Dept Neurol, Birmingham B15 2TH, W Midlands, England
[3] Queen Elizabeth Hosp Birmingham, Univ Hosp Birmingham NHS Trust, Dept Ophthalmol, Birmingham Neuroophthalmol Unit, Birmingham, W Midlands, England
[4] Idiopath Intracranial Hypertens UK, Birmingham, W Midlands, England
[5] Univ Birmingham, Wellcome Trust Clin Res Facil, Birmingham, W Midlands, England
[6] Birmingham Hlth Partners, Ctr Endocrinol Diabet & Metab, Birmingham B15 2TH, W Midlands, England