1. Ruhr-University Bochum, Human Genetics, Bochum, Germany
2. Ruhr-University Bochum, Neuroanatomy and Molecular Brain Research, Bochum, Germany
3. Ondokuz Mayis University, Faculty of Medicine, Department of Medical Biology, Samsun, Turkey
4. Samsun Education and Research Hospital, Department of Ophthalmology, Samsun, Turkey
5. Ruhr-University Bochum, Human Genetics, Bochum, Germany 5University Witten/Herdecke, Faculty of Health, Witten, Germany