V. F. Dolgushina
South-Urals State Medical University, Chelyabinsk
Russian Federation

Doctor of Sciences (Medicine), Professor, Head, Department of Obstetrics and Gynecology;

E-mail: dolgushinavf@yandex.ru

M. V. Astashkina
South-Urals State Medical University, Chelyabinsk
Russian Federation

Assistant Professor, Department of Obstetrics and Gynecology;

E-mail: astashkina-marina83@mail.ru

Yu. A. Semenov
South-Urals State Medical University, Chelyabinsk
Russian Federation

Candidate of Sciences (Medicine), Associate Professor, Department of Obstetrics and Gynecology;

I. V. Kurnosenko
South-Urals State Medical University, Chelyabinsk
Russian Federation

Doctor of Sciences (Medicine), Professor of the Department of Obstetrics and Gynecology;