1. Blood pressure survey in pregnancy;MacGillivray;Clin Sci,1969
2. Studies on blood pressure during pregnancy;Christianson;Am J Obstet Gynecol,1976
3. Blood pressure, the renin-aldosterone system and sex steroids throughout normal pregnancy;Wilson;Am J Med,1980
4. Management of hypertension during pregnancy;Barron,1990
5. Pregnancy Hypertension: A Systematic Evaluation of Clinical Diagnostic Criteria;Friedman,1977