1. Eye Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, UAE
2. Division of Pediatric Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
3. Center for Human Genetics, Bioscientia, Ingelheim, Germany
4. Institute of Human Genetics, University of Cologne, Cologne, Germany
5. Department of Medicine, University of Freiburg Medical Center, Freiburg, Germany