1. From the Department of Ophthalmology, University of Bonn, Bonn, Germany;
2. the Department of Medical Informatics, Biometry and Epidemiology, Ludwig-Maximilians-University, Munich, Germany; and
3. From the Department of Ophthalmology, University of Bonn, Bonn, Germany; the 3Nuffield Laboratory of Ophthalmology, University of Oxford, Oxford, United Kingdom.