1. Department of Human Genetics; Radboud University Medical Center; Nijmegen The Netherlands
2. Department of Ophthalmology; Radboud University Medical Center; Nijmegen The Netherlands
3. Donders Institute for Brain; Cognition and Behaviour; Radboud University; Nijmegen The Netherlands
4. Department of Ophthalmology; Columbia University; New York New York
5. Department of Pathology & Cell Biology; Columbia University; New York New York
6. Department of Public Health; K.G. Jebsen Center for Genetic Epidemiology; NTNU; Norwegian University of Science and Technology; Trondheim Norway
7. Departments of Clinical Genetics and Human Genetics; Leiden University Medical Center; Leiden The Netherlands
8. Department of Biosciences; Faculty of Science; COMSATS Institute of Information Technology; Islamabad Pakistan