Study Stopped
This study was stopped because of insufficient enrollment.
fFN & E3 in the Prediction of PTB in Women With Twin Pregnancies Receiving 17OHP or Placebo
Fetal Fibronectin (fFN) and Salivary Estriol (E3) in the Prediction of Preterm Birth in Women With Twin Pregnancies Receiving 17-Alpha-Hydroxyprogesterone Caproate or Placebo