[1] Iran Univ Med Sci, Firoozgar Hosp, Dept Neurol, Tehran, Iran
[2] Shahroud Univ Med Sci, Dept Neurol, Shahroud, Iran
[3] Iran Univ Med Sci, Hazrat Rasool Hosp, Dept Neurol, Tehran, Iran
[4] Shahid Beheshti Med Univ, Dept Neurol, Tehran, Iran
[5] Shahroud Univ Med Sci, Student Res Comm, Sch Med, Shahroud, Iran
[6] Iran Univ Med Sci, Firoozgar Hosp, Beh Afarin St, Tehran 1593647811, Iran