Patients with severe preeclampsia experience less hypotension during spinal anesthesia for elective cesarean section delivery than healthy parturients: a prospective cohort study. - Aya,AG.; Mangin,R.; Vialles,N.; Ferrer,J-M.; Robert,C.; Ripart,J.; La,J-E.Coussaye. (Anresth Analg, 2003)