1. Obstetrics and Gynecology Department, The First I.M. Sechenov Moscow State Medical University (Sechenov University), Moscow, Russia
2. Institute of Perinatology and Pediatrics, Almazov National Medical Research Centre, Saint Petersburg, Russia
3. Department of Functional and Ultrasound Diagnostics of Almazov National Medical Research Centre of Health Ministry of Russian Federation, Saint Petersburg, Russia
4. Obstetrician-Gynecologist, Department of Gynecology, «Medical Center» LLC, Moscow, Russia