1. From the Department of Ophthalmology and Grade-Reading-Center, University of Bonn, Bonn, Germany;
2. the Institute for Medical Information Sciences, Biometry and Epidemiology (IBE), University of Munich, Munich, Germany;
3. the Department of Ophthalmology, University of Leipzig, Leipzig, Germany;
4. the Department of Ophthalmology, University of Würzburg, Würzburg, Germany;
5. the Department of Ophthalmology, University of Heidelberg, Heidelberg, Germany;
6. St. Franziskus Hospital, Münster, Germany; and
7. the Department of Ophthalmology, Inselspital Bern, Bern, Switzerland.