The diagnostic and prognostic value of amniotic fluid white blood count, glucose, interleukin-6, and gram stain in patients with preterm labor and intact membranes. - Romero ,R.; Yoon ,B.H.; Mazor ,M.; Gomez ,R.; Diamond ,M.P.; Kenney ,J.S.; Ramirez ,M.; Fidel ,P.L.; Sorokin ,Y.; Cotton ,D.; Sehgal ,P. (Am J Obstet Gynecol, 1993)