1. Serial study of factors influencing changes in cardiac output during human pregnancy;Robson;Am J Physiol,1989
2. Maternal heart rate in pregnancy;Clapp;Am J Obstet Gynecol,1985
3. Cardiovascular function before, during, and after the first and subsequent pregnancies;Clapp;Am J Cardiol,1997
4. Maternal blood volume and cardiac output during pregnancy: a hypothesis of endocrinologic control;Longo;Am J Physiol,1983
5. Maternal hemodynamics and impaired fetal growth in pregnancy-induced hypertension;Nissel;Obstet Gynecol,1988