1. Volume of amniotic fluid at various stages of pregnancy;Fuchs;Clin Obstet Gynecol,1966
2. Amniotic fluid index: gestational age–specific values for normal human pregnancy;Hallak;J Reprod Med,1993
3. Amniotic fluid index measurements during pregnancy;Phelan;J Reprod Med,1987
4. The use of amniocentesis in patients with premature rupture of membranes;Garite;Obstet Gynecol,1979
5. Chorioamnionitis in the preterm gestation;Garite;Obstet Gynecol,1982