1. Department of Neuroscience, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
2. College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
3. Department of Internal Medicine, Medical Collage, Ha’il University, Ha’il, Saudi Arabia
4. Department of Internal Medicine, College of Medicine, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia
5. Department of Pediatrics, College of Medicine, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia
6. Department of Pediatrics, King Saud University Medical City (KSUMC), Riyadh, Saudi Arabia
7. Department of Internal Medicine, Medical Collage, Najran University, Najran, Saudi Arabia