Sarah Al-Mazidi1, Laila Y Al-Ayadhi2,3. 1. Department of Physiology, Faculty of Medicine, Imam Mohammad Ibn Saud Islamic University, Riyadh, Saudi Arabia. 2. Autism Research & Treatment Center, Faculty of Medicine, King Saud University, Riyadh, Saudi Arabia. 3. Department of Physiology, Faculty of Medicine, King Saud University, Riyadh, Saudi Arabia.