1. Genetics Service, Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom
2. UCL Institute of Ophthalmology, University College London, London, United Kingdom
3. Section of Ophthalmology, King's College London, St. Thomas’ Hospital Campus, London, United Kingdom
4. North East Thames Regional Genetics Service, Great Ormond Street Institute of Child Health, London, United Kingdom
5. Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom