1. Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Fars, Iran
2. Neurology Department, Namazi hospital, Shiraz, Fars, Iran
3. Department of Neuroscience, School of Advanced Medical Science and Technologies, Shiraz University of Medical sciences, Shiraz, Fars, Iran
4. Departments of Neurology and Psychiatry, Saint Louis University, Saint Louis, MO, USA
5. Department of Neurology, Texas Tech University, El Paso, TX, USA