1. Department of Ophthalmology, University of Kiel, House 25, Arnold-Heller-Straße 3, 24105 Kiel, Germany
2. Institute of Medical Informatics and Statistics, University of Kiel, House 31, Arnold-Heller-Straße 3, 24105 Kiel, Germany
3. Institute of Biomedical Optics, University of Lübeck, Peter-Monnik-Weg 4, 23562 Lübeck, Germany