Krechetova, L. V.
Vanko, L. V.
Vtorushina, V. V.
Nikolaeva, M. A.
Inviyaeva, E. V.
Tetruashvili, N. K.
Article History
Received: 8 November 2019
Revised: 20 March 2020
Accepted: 20 March 2020
First Online: 3 June 2020
Compliance with ethical norms
: The study was approved by the Ethics Committee of the National Medical Research Center for Obstetrics, Gynecology and Perinatology, Ministry of Healthcare of Russian Federation. All participants signed an informed consent about inclusion in the study. The authors declare no conflict of interests.