R.I. DAVLETSHINA¹, E.G. MENDELEVICH² ¹Republican Clinical Hospital of the Ministry of Health of the Republic of Tatarstan, 138 Orenburgskiy Trakt, Kazan, Russian Federation, 420064 ²Kazan State Medical University, 49 Butlerov St., Kazan, Russian Federation, 420012  Davletshina R.I. — PhD (Medicine), neurologist of Neurology Department #1, tel. +7-987-264-46-68, e-mail: rez-davletshina@yandex.ru¹ Mendelevich E.G. — D. Med. Sc., Professor of the […]