M.M. MINNULLIN1, F.F. MINNULLINA1, R.A. ZEFIROV2, L.M. MUKHAMETZYANOVA2  1Kazan Federal University, Kazan 2Republic Clinical Hospital, Kazan 3Kazan State Medical University, Kazan  Contact details: Mukhametzyanova L.M. — Research Assistant, obstetrician-gynecologist Address: 138 Orenburgskiy trakt, Kazan, Russian Federation, 420012, tel.: +7-917-929-50-77, e-mail: mmm-liliya@yandex.ru The pregnancies after the 28th week of gestation have a formidable complication – preeclampsia, […]