Vaginal progesterone pessaries for pregnant women with a previous preterm birth to prevent neonatal respiratory distress syndrome (the PROGRESS Study): A multicentre, randomised, placebo-controlled trial.
Caroline A CrowtherPat AshwoodAndrew J McPheeVicki FlenadyThach TranJodie M DoddJeffrey S Robinsonnull nullPublished in: PLoS medicine (2017)
Current Clinical Trials ISRCTN20269066.