1. From the Vitreoretinal Department and2Sonalee Laboratory, St. George's University of London, Cranmer Terrace, London, United Kingdom; the
2. Sonalee Laboratory, St. George's University of London, Cranmer Terrace, London, United Kingdom; the
3. Paediatric Department, Moorfields Eye Hospital, City Road, London, United Kingdom; the4Department of Ophthalmology, Barts and The Royal London Hospital, London, United Kingdom; the
4. Department of Clinical Genetics, Guy's and St Thomas' Hospitals, London, United Kingdom; and the
5. Department of Ophthalmology, Ninewells Hospital and Medical School, Dundee, United Kingdom.
6. From the Vitreoretinal Department and