[1] UCL, Inst Ophthalmol, London, England
[2] Moorfields Eye Hosp NHS Fdn Trust, London, England
[3] UCL, Inst Child Hlth, London, England
[4] Univ Birmingham, Birmingham, W Midlands, England
[5] Univ Hosp Birmingham NHS Fdn Trust, Birmingham, W Midlands, England
[6] Duke Univ Hosp, Durham, NC USA
[7] Great Ormond St Hosp Children NHS Fdn Trust, London, England
[8] UCL, NIHR Biomed Res Ctr, London, England
[9] UCL, Moorfields Eye Hosp NHS Fdn Trust, London, England