A.YU. LAZAREVA1, 2, I.B. FATKULLINA1, 3, E.A. SAGATDINOVA2, T.KH. DALAEVA3  1Bashkir State Medical University, Ufa 2Republican Clinical Hospital named after G.G. Kuvatov, Ufa 3Republican Clinical Perineal Center, Ufa  Contact details: Lazareva A.Yu. — postgraduate student of the Department of Obstetrics and Gynecology, obstetrician-gynecologist Address: 3 Lenin St., 450008 Ufa, Russian Federation, tel.: 7-987-583-86-62, e-mail: lazarevaayu@mail.ru […]