1. The Collaborative Perinatal Study of the National Institute of Neurological Diseases and Stroke: The women and their pregnancies;Niswander,1972
2. Maternal mortality due to acute toxemia;Hibbard;Obstet. Gynecol.,1973
3. Pregnancy outcome as related to hypertension, edema and proteinuria;Friedman,1976
4. Maternal mortality in eclampsia;Lôpez-Llera;Am. J. Obstet. Gynecol.,1976
5. Influence of blood pressure changes with and without proteinuria upon outcome of pregnancy;Page;Am. J. Obstet. Gynecol.,1976