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Low-dose aspirin for prevention of adverse outcomes related to abnormal placentation.
Bujold E, Roberge S, Nicolaides KH.
Prenat Diagn 2014;34:642-8. 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.