-
Chronic hypertension and adverse pregnancy outcomes: a cohort study.
Panaitescu AM, Syngelaki A, Prodan N, Akolekar R, Nicolaides KH.
Ultrasound Obstet Gynecol 2017;50:228-235. pdf -
Prediction of pregnancy complications by first-trimester maternal serum PAPP-A and free beta-hCG and with second-trimester uterine artery Doppler.
Spencer K, Yu CK, Cowans NJ, Otigbah C, Nicolaides KH.
Prenat Diagn 2005;25:949-53.