1. Department of Neuroscience King Faisal Specialist Hospital and Research Centre Riyadh Saudi Arabia
2. King Saud bin Abdulaziz University for Health Sciences Riyadh Saudi Arabia
3. King Abdullah International Medical Research Center (KAIMRC) Riyadh Saudi Arabia
4. Department of Medicine, King Abdulaziz Medical City Ministry of National Guard Health Affairs Riyadh Saudi Arabia
5. Department of Medical Imaging King Abdulaziz Medical City, Ministry of National Guard Health Affairs Riyadh Saudi Arabia
6. Division of Neurology, Department of Medicine, King Abdulaziz Medical City Ministry of National Guard Health Affairs Riyadh Saudi Arabia