1. Hydramnios prediction of adverse perinatal outcome;Biggio;Obstet Gynecol,1999
2. Intrauterine growth restriction,2000
3. Antepartum fetal surveillance,1999
4. Amniotic fluid volume assessment with the four-quadrant technique at 36-42 weeks gestation;Phelan;J Reprod Med,1987
5. Obstetrics: normal and problem pregnancies;Gabbe,2002