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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. -
Assessment of fetal compromise by Doppler ultrasound investigation of the fetal circulation: arterial, intracardiac and venous blood flow velocity studies.
Hecher K, Campbell S, Doyle P, Harrington K, Nicolaides KH.
Circulation 1995;91:129-38. -
Fetal venous, intracardiac, and arterial blood flow measurements in intrauterine growth retardation: relationship with fetal blood gases.
Hecher K, Snijders R, Campbell S, Nicolaides KH.
Am J Obstet Gynecol 1995;173:10-5.