1. Epidemiology and causes of preterm birth;Goldenberg;Lancet,2008
2. A case-control study of chorioamnionitis infection and histologic chorioamnionitis in prematurity;Hillier;N Engl J Med,1988
3. The relationship of amniotic fluid cytokines and preterm delivery, amniotic fluid infection, histologic chorioamnionitis, and chorioamnion infection;Hillier;Obstet Gynecol,1993
4. A review of premature birth and subclinical infection;Gibbs;Am J Obstet Gynecol,1991
5. Prematurity: infection as an etiologic factor;Minkoff;Obstet Gynecol,1993