E.V. FAYZULLINA1, A.R. USMANOV1, D.N. GUBAYEVA1, Yu.V. DAVYDOV1, R.F. HAKIMOVA1, R.G. KUZNETSOV2 1Kazan State Medical University, 49 Butlerov St., Kazan, Russian Federation, 420012 2Republican Clinical Hospital of the Ministry of Healthcare of the Republic of Tatarstan, 138 Orenburgskiy Trakt, Kazan, Russian Federation, 420064  Fayzullina E.V. — D. Med. Sc., Professor of the Dermatology and Venereology Department, tel. +7-917-291-11-77, e-mail: [email protected] Usmanova A.R. — 5th year student of Medical Faculty, tel. +7-904-672-00-98, […]