1 Department of Ophthalmology, Radboud University Medical Center, Nijmegen, The Netherlands.
2 Department of Ophthalmology, Radboud University Medical Center, Nijmegen, The Netherlands; Department of Ophthalmology, St. Elisabeth Hospital, Tilburg, The Netherlands.
3 Department of Ophthalmology, Radboud University Medical Center, Nijmegen, The Netherlands; Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands.
4 Department of Ophthalmology, Radboud University Medical Center, Nijmegen, The Netherlands; Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands. Electronic address: C.J.F.Boon@lumc.nl.