Ch.S. NURULLINA, E.G. MENDELEVICH Kazan State Medical University, 49 Butlerov Str., Kazan, Russian Federation, 420012  Nurullina Ch.S. ― postgraduate student of the Department of Neurology and Rehabilitation, e-mail: chulpan_nurullina@mail.ru, ORCID ID: 0000-0003-2873-0585 Mendelevich E.G. ― D. Sc. (medicine), Professor of the Department of Neurology and Rehabilitation, tel. (843) 237-34-66, e-mail: emendel@mail.ru, ORCID ID: 0000-0002-6829-7942 Relevance. […]