1. Biochemistry Department, Faculty of Sciences King Abdulaziz University Jeddah Saudi Arabia
2. Experimental Biochemistry Unit, King Fahad Medical Research Center King Abdulaziz University Jeddah Saudi Arabia
3. Division of Neurology, Department of Internal Medicine The Neuroscience Research Unit King Abdulaziz University Jeddah Saudi Arabia
4. Department of Psychiatry and Neuroscience Harvard Medical School and McLean Hospital Belmont Massachusetts USA