1. Department of Pediatrics, Division of Genetics King Abdulaziz Medical City Riyadh Saudi Arabia
2. King Abdullah International Medical Research Center King Saud bin Abdulaziz University for Health Sciences Riyadh Saudi Arabia
3. Department of Lab Medicine, Division of Translational Pathology King Abdulaziz Medical City Riyadh Saudi Arabia
4. Department of Pediatrics, Division of Neurology King Abdulaziz Medical City Riyadh Saudi Arabia
5. Department of Medicine, Division of Neurology King Saud bin Abdulaziz University for Health Sciences Riyadh Saudi Arabia
6. Department of Pediatrics, College of Medicine Qassim University Buraidah Saudi Arabia