[1] Neurol, Mashhad, Razavi Khorasan, Iran
[2] Mashhad Univ Med Sci, Dept Community Med, Mashhad, Razavi Khorasan, Iran
[3] Univ Western Ontario, Clin Neurol Sci, London, ON, Canada
[4] Monash Univ, Sch Clin Sci, Stroke & Ageing Res, Monash, Australia
[5] Toronto Gen Hosp, Toronto, ON, Canada
[6] London Hlth Sci Ctr, London, ON, Canada