[1] Univ Glasgow, Inst Infect Immun & Inflammat, Coll Med Vet & Life Sci, Glasgow Biomed Res Ctr, Glasgow G12 8TA, Lanark, Scotland
[2] So Gen Hosp, Dept Neurol, Inst Neurol Sci, Glasgow G51 4TF, Lanark, Scotland
[3] Univ Glasgow, Beatson Inst Canc Res, Glasgow G61 1BD, Lanark, Scotland
[4] Univ Colorado, Sch Med, Dept Neurol, Aurora, CO USA
[5] Univ Colorado, Dept Ophthalmol, Sch Med, Aurora, CO USA