6Rutherford S E, Phelan J P, Smith C V, et al. The four quadrant assessment of amniotic fluid volume: an adjunct to antepartum fetal heart rate testing[J]. Obstet Gynecol,2003,84 (2) :353-356.
7Furukawa S, Sameshima H, Ikenoue T. Intrapartum late deceleration develops more frequently in pre-eclamptic women with severe proteinuria[J]. J Obstet Gynaecol Res,2006,32(1) : 68-73.
8Sameshima H, Ikenoue T, Ikeda T, et al. Unselected low-risk pregnancies and the effect of continuous intrapartum fetal heart rate monitoring on umbilical blood gases and cerebral palsy[J]. Am J Obstet Gynecol,2004,190(1):118-123.
9Kim S Y, Khandelwal M, Gaughan J P. Is the intrapartum biophysical profile useful [J]. Obstet Gynecol, 2003,1 02 (3) 471-476.