1. Oxford Eye Hospital, Oxford University Hospitals National Health Service Foundation Trust, and Nuffield Laboratory of Ophthalmology, Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
2. Department of Ophthalmology, University of Bonn, Bonn, Germany
3. Institute of Human Genetics, University of Bonn, Bonn, Germany
4. Bioscientia Center for Human Genetics, Ingelheim, Germany
5. Institute of Human Genetics, University Hospital of Cologne, Cologne, Germany