7Hutcheon JA,Lisonkova S,Joseph KS.Epidemiology of pre-eclampsia and the other hypertensive disorders of pregnancy[J].Best Pract Res Clin Obstet Gynaecol,2011,25(4):391-403.
8Samuel A,Lin C,Parviainen K,et al.Expectant management of preeclampsia superimposed on chronic hypertension[J].Matern Fetal Neonatal Med,2011,24(7):907-911.
9Hall DR,Odendaal HJ,Steyn DW,et al.Expectant management of early onset severe preeclampsia:maternal outcome[J].Br J Obster Gynecol,2000,107(10):1252-1255.
10Mostello D,Kallogjeri D,Tungsiripat R,et al.Recurrence of preeclampsia:effects of gestational age at delivery of the first pregnancy,body mass index,paternity,and interval between births[J].Am J Obstet Gynecol,2008,199(1):55.el-55e7.