Combs, C Andrew Fetal fibronectin versus cervical length as predictors of preterm birth in twin pregnancy with or without 17-hydroxyprogesterone caproate. [electronic resource] - American journal of perinatology Dec 2014 - 1023-30 p. digital Publication Type: Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 1098-8785 Standard No.: 10.1055/s-0034-1370342 doi Subjects--Topical Terms: 17 alpha-Hydroxyprogesterone CaproateAdultCervical Length MeasurementCervix Uteri--chemistryEstrogen Antagonists--therapeutic useFemaleFibronectins--analysisGestational AgeHumansHydroxyprogesterones--therapeutic usePredictive Value of TestsPregnancyPregnancy, TwinPremature Birth--diagnosisUltrasonography, PrenatalVagina--chemistry