1. Department of Ophthalmology, University of Muenster Medical Center, Muenster, Germany
2. Department of Ophthalmology, Klinikum Fulda, University of Marburg Campus Fulda, Fulda, Germany
3. Zentrum für Humangenetik Tübingen, Praxis fuer Humangenetik und CeGaT GmbH, Tuebingen, Germany