1. Population, Policy and Practice Department of Research and Teaching, Great Ormond Street Hospital, London, United Kingdom
2. Great Ormond Street Hospital for Children NHS Trust, London, United Kingdom
3. Sussex Eye Hospital, Sussex, United Kingdom
4. Ulverscroft Vision Research Group, London, United Kingdom
5. UCL Institute of Ophthalmology, London, United Kingdom
6. National Institute for Health Research Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, United Kingdom
7. School of Cellular and Molecular Medicine, Bristol University, Bristol, United Kingdom
8. Bristol Eye Hospital, Bristol, United Kingdom