N.V. Spiridonova, E.I. Basina Samara State Medical University, 80 Polevaya St., Samara, Russian Federation, 443099   Spiridonova N.V. ― D. Med. Sc., Professor, Head of the Department of Obstetrics and Gynecology of Institute of Postgraduate Education, tel. +7-903-309-66-33, e-mail: nvspiridonova@mail.ru Basina E.I. ― postgraduate student of the Department of Obstetrics and Gynecology of Institute of Postgraduate […]