1. Department of Ophthalmology, University of Bonn, Bonn, Germany
2. Center for Rare Diseases Bonn (ZSEB), University of Bonn, Bonn, Germany
3. Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
4. Nuffield Laboratory of Ophthalmology, Department of Clinical Neurosciences, University of Oxford, Oxford, UK
5. OxalEurope, The European Hyperoxaluria Consortium, Cologne, Germany
6. Department of Pediatrics, Division of Pediatric Nephrology, University of Bonn, Bonn, Germany
7. Department of Pediatric Nephrology, University Children's Hospital Essen, Essen, Germany