R.I. DAVLETSHINA¹, E.G. MENDELEVICH² ¹Republican Clinical Hospital of the MH of RT, 138 Orenburgskiy trakt, Kazan, Russian Federation, 420064 ²Kazan State Medical University, 49 Butlerov St., Kazan, Russian Federation, 420012  Davletshina R.I. — Cand. Med. Sc., doctor of the Neurology Department № 1, tel. +7-987-264-46-68, e-mail: [email protected] Mendelevich E.G. — D. Med. Sc., Professor of […]