L.А. КОZLOV¹, N.V. YAKOVLEV¹,² ¹Kazan State Medical University, 49 Butlerov St., Kazan, Russian Federation, 420012 ²Republican Clinical Hospital of the Ministry of Health of the Republic of Tatarstan, 138 Orenburgskiy Trakt, Kazan, Russian Federation, 420064  Kozlov L.A. ― D. Med. Sc., Professor of Department of obstetrics and gynecology №1, tel. +7-906-115-16-56, e-mail: nkt.yakovlev@gmail.com Yakovlev N.V. […]