1. UCL Institute of Ophthalmology, University College London, London, United Kingdom
2. Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom
3. Guy's and St. Thomas’ NHS Foundation Trust, London, United Kingdom
4. Rigshospitalet, Copenhagen, Denmark
5. University of Copenhagen, Copenhagen, Denmark
6. Fundación Jiménez Díaz University Hospital, (IIS-FJD, UAM), Madrid, Spain
7. Centro de Investigacion Biomedica en Red de Enfermedades Raras (CIBERER), ISCIII, Madrid, Spain
8. Jules-Gonin Eye Hospital, Fondation Asile des Aveugles, Université de Lausanne, Lausanne, Switzerland