1. Prevention of spontaneous preterm birth : the role of sonographic cervical length in identifying patients who may benefit from progesterone treatment Ultrasound;Romero;Obstet Gynecol,2007
2. Vaginal progesterone is associated with a decrease in risk for early preterm birth and improved neonatal outcome in women with a short cervix : a secondary analysis from a randomized double - blind placebo - controlled trial Ultrasound;DeFranco;Obstet Gynecol,2007
3. Observations on the sonographic measurement of cervical length and the risk of premature birth Fetal;Watson;Med,1999
4. Cervical blood perfusion assessed using power Doppler - derived estimation of fractional moving blood volume : a reproducibility study Ultrasound;Ierullo;AM Obstet Gynecol,2011
5. Prediction of preterm birth using the cervical consistency index Ultrasound;Parra;Obstet Gynecol,2011