1. Department of Obstetrics and Gynecology, 1st Institute of Clinical Medicine, I.M. Sechenov, First Moscow State Medical University, Moscow, Russia
2. European Medical and Research Center (CEMER), Perugia, Italy
3. Centre of Perinatal and Reproductive Medicine, University of Perugia, Perugia, Italy
4. Almazov National Medical Research Centre, Health Ministry of Russian Federation, Saint Petersburg, Russia