Lev P Peshev
Department of obstetrics and gynecology, Mordovian state Universities named N.P. Ogarev, Saransk, Russia
Natalya A Lyalichkina
Department of obstetrics and gynecology, Mordovian state Universities named N.P. Ogarev, Saransk, Russia
Galina V Fominova
Department of obstetrics and gynecology, Mordovian state Universities named N.P. Ogarev, Saransk, Russia