1. Department of Human GeneticsRadboud University Medical Center Nijmegen The Netherlands
2. Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center Nijmegen The Netherlands
3. Radboud Institute for Molecular Life Sciences, Radboud University Medical Center Nijmegen The Netherlands
4. Institut des Neurosciences de Montpellier, INSERM, Université de Montpellier Montpellier France
5. Service d'exploration de la vision et neuro‐ophtalmologie, CHRU de Lille Lille France
6. University of Lille, INSERM UMR‐S1172, CHU Lille, Biochemistry and Molecular Biology Department, UF Genopathies Lille France
7. Institute of Human Genetics, University of Regensburg Regensburg Germany
8. Department of Medical Epidemiology and BiostatisticsKarolinska Institutet Stockholm Sweden