1. Moorfields Eye Hospital, London, UK
2. UCL Institute of Ophthalmology, London, UK
3. North Thames Genomic Laboratory Hub, Great Ormond Street NHS Foundation Trust, London, UK
4. National Hospital for Neurology and Neurosurgery, London, UK
5. UCL Institute of Neurology, London, UK
6. University of California, San Francisco, San Francisco, California, USA
7. Great Ormond Street Hospital, London, UK
8. Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK