A.A. KHASANOV1, 3, F.F. MINULLINA2, 3  1Kazan State Medical University, Kazan 2Kazan Volga Federal University, Kazan 3Republic Clinical Hospital, Kazan  Contact details: Khasanov A.A. — MD, Professor of the Department of Obstetrics and Gynecology named after Prof. V.S. Gruzdev, Chief Specialist, Chief Researcher Address: 49 Butlerov St., Kazan, Russian Federation, 420012, tel.: +7-917-239-15-00, e-mail: albirkhasanov@mail.ru […]