M.E. ZHELEZOVA1, T.P. ZEPHIROVA1, N.E. YAGOVKINA2, M.A. NYUKHNIN1, N.Yu. CHISTYAKOVA2 1Kazan State Medical Academy — Branch Campus of the RMACPE MOH Russia, 36 Butlerov Str., Kazan, Russian Federation, 420012 2Kazan (Volga) Federal University, 1A Chekhov Str., Kazan, Russian Federation, 420000  Zhelezova M.E. — Cand. Med. Sc., Associate Professor of the Department of Obstetrics and Gynecology No. […]