1. University of Bonn, Department of Ophthalmology, Bonn, Germany
2. GRADE Reading Center, Bonn, Germany
3. Department of Ophthalmology and Department of Clinical Research, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland
4. The Nuffield Laboratory of Ophthalmology, Sleep and Circadian Neuroscience Institute, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
5. Institute for Medical Biometry, Informatics and Epidemiology, University Hospital Bonn, Germany