I.I. MUSIN, R.M. ZAYNULLINA, E.M. POPOVA, R.A. NAFTULOVICH Bashkir State Medical University, 3 Lenin St., Ufa, Russian Federation, 450000  Musin I.I. ― Assistant of the Department of obstetrics and gynecology №2, tel. +7-917-467-10-64, e-mail: ilnur-musin@yandex.ru Zaynullina R.M. ― Cand. Med. Sc., Associate Professor of the Department of obstetrics and gynecology №2, tel. (347) 264-96-50, e-mail: […]