A.A. NASYBULLINA1, V.M. GAZIZYANOVA1, E.V. KHAZOVA1, O.V. BULASHOVA1, M.I. MALKOVA1, E.E. MUSTAPHIN2 1Kazan State Medical University, 49 Butlerov St., Kazan, Russian Federation, 420012 2City Clinical Hospital № 7, 54 Chuykov St., Kazan, Russian Federation, 420132 Nasybullina A.A. — postgraduate student of the Department of Propaedeutics of Internal Diseases, tel. +7-987-267-25-59, e-mail: [email protected] Gazizyanova V.M. — […]