-
Clinical significance of first-trimester chorionic bumps: a matched case-control study.
Sana Y, Appiah A, Davison A, Nicolaides KH, Johns J, Ross JA.
Ultrasound Obstet Gynecol 2013;42:585-9. -
Turning the pyramid of prenatal care.
Nicolaides KH.
Fetal Diagn Ther 2011;29:183-96.