1. Department of Pediatrics, King Abdulaziz Medical City, Jeddah, Saudi Arabia.
2. King Abdullah International Medical Research Center, Jeddah, Saudi Arabia.
3. Department of Neuroscience, King Faisal Specialist Hospital & Research Centre, Jeddah, Saudi Arabia.
4. College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia.
5. Department of Ophthalmology, King Abdulaziz Medical City, Jeddah, Saudi Arabia.
6. Madinah Health Affairs, Ministry of Health, Madinah, Saudi Arabia.