1. Department of Health Economics, School of Health care Management, Shiraz University of Medical Sciences, Shiraz, Iran
2. Research Center for Transgenic Technology and Stem cell, Shiraz University of Medical Sciences, Shiraz, Iran
3. Departments of Neurology, Shiraz University of Medical Sciences, Shiraz, Iran
4. Research Center for Traditional Medicine and History of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
5. Department of Neurology, Saint Louis University, Saint Louis, MO, USA