-
Screening for fetal aneuploidies at 11 to 13 weeks.
Nicolaides KH.
Prenat Diagn 2011;31:7-15. -
Some thoughts on the true value of ultrasound.
Nicolaides KH.
Ultrasound Obstet Gynecol 2007;30:671-4. -
The 11-14 week scan.
Nicolaides KH, Heath V, Liao AW.
Baillieres Best Pract Res Clin Obstet Gynaecol 2000;14:581-94.