*Multiple Sclerosis Research Center, Neuroscience Institute
†Department of Neurology, Sina Hospital
‡Department of Social Medicine
∥Universal Council of Epidemiology (UCE), Universal Scientific Education and Research Network (USERN), Tehran University of Medical Sciences, Tehran
§Neuroscience Research Center, Qom University of Medical Sciences, Qom
¶Department of Neurology, Valiasr Hospital, Zanjan University of Medical Sciences, Zanjan
#Department of Neurology, Mashhad University of Medical Sciences, Mashhad, Iran
The authors declare no conflict of interest.
Correspondence to: Amirreza Azimi, MD, Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Sina Hospital, Imam Street, Tehran 1136746911, Iran. E-mail: [email protected].