A.A. KHASANOV1–4, S.V. GUBAYDULLINA4, A.R. GALYAVEEVA4, E.R. YARULLINA1  1Kazan State Medical University, Kazan 2Kazan (Volga) Federal University, Kazan ³Republic Clinical Hospital, Kazan 4Maternity Hospital No. 3 of Kazan State Medical University Clinic named after Prof. V.S. Gruzdev, Kazan  Contact details: Khasanov A.A. — MD, Professor of the Department of Obstetrics and Gynecology named after Prof. V.S. […]