1. Department of Genetics; King Faisal Specialist Hospital and Research Center; Riyadh 11211 Saudi Arabia
2. Eye Institute, Cleveland Clinic Abu Dhabi; Abu Dhabi United Arab Emirates
3. National Research Center; Cairo Egypt
4. Vitreo-retinal Division; King Khaled Eye Specialist Hospital; Riyadh Saudi Arabia
5. Department of Ophthalmology; American University of Beirut; Beirut Lebanon
6. Human Genetics Department, Medical Research Institute; Alexandria University; Alexandria Egypt
7. Department of Medical Genetics; King Faisal Specialist Hospital and Research Center; Riyadh Saudi Arabia
8. Department of Anatomy and Cell Biology; College of Medicine, Alfaisal University; Riyadh Saudi Arabia
9. Department of Medical Genetics; King Fahad General Hospital; Jeddah Saudi Arabia
10. Division of Pediatrics Neurology; College of Medicine, King Saud University; Riyadh Saudi Arabia
11. Department of Ophthalmology; Cairo University; Cairo Egypt
12. Saudi Human Genome Project; King Abdulaziz City for Science and Technology; Riyadh Saudi Arabia