1. From the Bartime´us Institute for the Visually Impaired, Zeist, The Netherlands; the
2. Department of Ophthalmology, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands; the
3. Departments of Human Genetics and
4. Departments of Human Genetics and4Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen, Nijmegen, The Netherlands.
5. Ophthalmology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; and the