E. V. Sibirskaya
Pirogov Russian National Research Medical University (Pirogov University) ; Russian Chidren’s Clinical Hospital—Branch of the N.I. Pirogov Russian National Research Medical University (Pirogov University) ; Russian University of Medicine
Russian Federation

Elena V. Sibirskaya, MD, Dr. Sci. (Medicine), Associate Professor of Obstetrics and Gynecology named after Academician G.M. Savelyeva of the Pediatric Faculty; Head of the Gynecological Department of a separate structural unit; Professor of the Department of Obstetrics, Gynecology and Reproductive Medicine

Moscow 

S. M. Sharkov
Morozovskaya Children’s Municipal Clinical Hospital
Russian Federation

Sergey M. Sharkov, MD, Dr. Sci. (Medicine), Professor, Head of the Moscow City Center for Reproductive Health of Children and Adolescents

Moscow 

I. V. Karachentsova
Pirogov Russian National Research Medical University (Pirogov University) ; Russian Chidren’s Clinical Hospital—Branch of the N.I. Pirogov Russian National Research Medical University (Pirogov University)
Russian Federation

Irina V. Karachentsova, MD, Cand. Sci. (Medicine), Associate Professor of the Department of Obstetrics and Gynecology Academician G.M. Savelyeva IMD, Chief freelance specialist, pediatric and adolescent gynecologist, obstetrician-gynecologist

Moscow 

S. V. Kazantseva
Pirogov Russian National Research Medical University (Pirogov University)
Russian Federation

Sofia V. Kazantseva, student 

Moscow 

P. O. Nikiforova
Pirogov Russian National Research Medical University (Pirogov University) ; Russian Chidren’s Clinical Hospital—Branch of the N.I. Pirogov Russian National Research Medical University (Pirogov University)
Russian Federation

Polina O. Nikiforova, postgraduate student, doctor of the gynecological department of the Russian Chidren’s Clinical Hospital

117513, Moscow