 - Minor patients, patients with post-partum preeclampsia, premature rupture of membranes, a severe congenital fetal malformation, twin pregnancies and fetal death. Patients with underlying diseases taht could be associated with preeclampsia as pre-existing hypertension ie before 20SA, anti-phospholipid syndrome, lupus, type DM 1-2, nephropathy, etc will be excluded. Patients who have a complication during the pregnancy will be excluded from the control group. 