[1] UCL, Great Ormond St Inst Child Hlth, Populat Policy & Practice Programme, Lifecourse Epidemiol & Biostat Sect, London, England
[2] Moorfields Eye Hosp, NIHR Biomed Res Ctr, London, England
[3] UCL, Inst Ophthalmol, London, England
[4] Great Ormond St Hosp Children NHS Fdn Trust, London, England
[5] Great Ormond St Hosp Sick Children, Natl Inst Hlth Res NIHR Biomed Res Ctr, London, England
[6] UCL, Inst Child Hlth, London, England
[7] Univ Bristol, Dept Ophthalmol, Bristol, Avon, England
[8] Univ Bristol, Bristol Med Sch Translat Hlth Sci, Bristol, Avon, England
[9] Manchester Univ Hosp NHS Trust, Manchester Royal Eye Hosp, Manchester, Lancs, England
[10] Royal Victoria Hosp, Eye & Ear Clin, Belfast, Antrim, North Ireland
[11] Sheffield Children Hosp NHS Fdn Trust, Dept Ophthalmol, Sheffield, S Yorkshire, England
[12] Sheffield Teaching Hosp NHS Fdn Trust, Sheffield, S Yorkshire, England
[13] Royal Victoria Infirm, Newcastle Eye Ctr, Newcastle Upon Tyne, Tyne & Wear, England
[14] Univ Birmingham, Acad Unit Ophthalmol, Birmingham, W Midlands, England
[15] Great Ormond St Hosp Sick Children, Dept Ophthalmol, London, England
[16] Moorfields Eye Hosp, London, England
[17] Univ Hosp Wales, Dept Ophthalmol, Cardiff, S Glam, Wales
[18] Hull & East Yorkshire Hosp NHS Trust, Kingston Upon Hull, N Humberside, England
[19] Cambridge Univ Hosp NHS Fdn Trust, Dept Ophthalmol, Cambridge, England
[20] Birmingham Womens Hosp, Birmingham, W Midlands, England
[21] Birmingham Childrens Hosp, Birmingham, W Midlands, England
[22] Nottingham Univ Hosp NHS Trust, Dept Ophthalmol, Nottingham, England
[23] Nottingham Univ Hosp NHS Trust, Nottingham, England
[24] Brighton & Sussex Univ Hosp NHS Trust, Sussex Eye Hosp, Brighton, E Sussex, England
[25] Univ Bristol, Bristol, Avon, England
[26] St Thomas Hosp, Dept Ophthalmol, London, England
[27] Manchester Royal Eye Hosp, Manchester Acad Hlth Sci Ctr, Manchester, Lancs, England
[28] Univ Hosp Bristol NHS Fdn Trust Bristol, Bristol, Avon, England
[29] Moorfields Eye Hosp, London, England
[30] Oxford Univ Hosp NHS Fdn Trust, Oxford Eye Hosp, Oxford, England
[31] St Thomas Hosp, Dept Ophthalmol, London, England
[32] Birmingham Midland Eye Ctr, Birmingham, W Midlands, England