L.I. MALTSEVA, A.S. POLUKEEVA, Yu.V. GARIFULLOVA Kazan State Medical Academy, 36 Butlerov St., Kazan, Russian Federation, 420012  Maltseva L.I. — D. Med. Sc., Professor, Head of the Department of Obstetrics and Gynecology № 1, tel. +7-905-314-40-51, e-mail: laramalc@mail.ru Polukeeva A.S. — postgraduate student of the Department of Obstetrics and Gynecology № 1, tel. +7-919-681-22-77, e-mail: […]