NCT03562598 - Clinical Trial References

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Citation(s)

Alfirevic Z, Roberts D, Martlew V
How strong is the association between maternal thrombophilia and adverse pregnancy outcome? A systematic review. Eur J Obstet Gynecol Reprod Biol. 2002 Feb 10;101(1):6-14. Review.
Alfirevic Z, Stampalija T, Gyte GM
Fetal and umbilical Doppler ultrasound in high-risk pregnancies. Cochrane Database Syst Rev. 2013 Nov 12;(11):CD007529. doi: 10.1002/14651858.CD007529.pub3. Review. Update in: Cochrane Database Syst Rev. 2017 Jun 13;6:C

Frequency of Performing Umbilical Artery Doppler in the Third Trimester in High Risk Pregnancy A Randomized Controlled Trial

Clinical trial NCT03562598 - References