O.N. Ivanitskaya - Ph.D. (Med.), Sonographer, Medical-Genetics Department, Moscow regions Research In-stitute of Obstetrics and Gynecology. E-mail: olniksa@gmail.com E.M. Demidova - Dr.Sc. (Med.), Professor, Obstetrician, LLC «Klinika na Petrovke», Moscow, Russia. E-mail: e.m.demidova@mail.ru M.B. Demidov - Student, Medical Institute Peoples' Friendship University of Russia, Moscow, Russia. E-mail: demidovmb@gmail.com L.A. Nikitina - Ph.D. (Med.), Research Scientist, Institute of Cell biology, Histology and Embryology, Medical University of Graz, Graz, Austria. E-mail: lunikit@gmail.com L.M. Samokhodskaya - Ph.D. (Med.), Associate Professor, Leading Research Scientist, Laboratory of Gene and Cell Technologies, Faculty of Fundamental Medicine, Moscow State University named after M.V. Lomonosov. E-mail: slm@fbm.msu.ru