Unconjugated estriol values between 14 and 22 weeks of gestation in relation to prenatal screening for Down syndrome

• Unconjugated estriol values in Down syndrome screening
• Jonathan P. Bestwick, Wayne J. Huttly, Nicholas J. Wald

• Prenatal Diagnosis, March 2012, Wiley
• DOI: 10.1002/pd.2936