1. Neurology Department, Shariati Hospital, Iranian Neuromuscular Research Center (INMRC), Tehran University of Medical Sciences, Tehran, Iran
2. Neurology Department, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
3. Department of Neurology, Isfahan University of Medical Sciences, Isfahan, Iran
4. Department of Neurology, Tabriz University of Medical Sciences, Tabriz, Iran
5. Neurology Department, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
6. Department of Neurology, Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
7. Neurology Department, Imam-Khomeini Complex Hospital, Tehran University of Medical Sciences, Tehran, Iran