1. UCL Institute of Ophthalmology, University College London, London, United Kingdom
2. Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom
3. Cell Biology, Neurobiology & Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
4. Casey Eye Institute, Oregon Health & Science University, Portland, Oregon, United States
5. Ophthalmology, University of Washington, Seattle, Washington, United States
6. Ophthalmology & Visual Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, United States