1 Department of Neurology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran 2 Department of Neurology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran 3 Department of Biostatistics, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran 4 Department of Neurology, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanj...