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Prenatal Diagnosis|November 22, 2012
Correction of first trimester biochemical aneuploidy screening markers for smoking status: influence of gestational age, maternal ethnicity and cigarette dosageKevin Spencer, Nicholas J CowansPrenatal Diagnosis|December 13, 2006
Is there an association between maternal ABO and rhesus blood groups and the first-trimester serum markers free beta-hCG and PAPP-A used for the detection of fetal aneuploidy?Nicholas J Cowans, Kevin SpencerBJOG : an International Journal of Obstetrics and Gynaecology|March 12, 2003
Screening for trisomy 21 in twins using first trimester ultrasound and maternal serum biochemistry in a one-stop clinic: a review of three years experienceKevin Spencer, Kypros H NicolaidesPrenatal Diagnosis|November 23, 2012
Effect of gestational age on first trimester maternal serum prenatal screening correction factors for ethnicity and IVF conceptionNicholas J Cowans, Kevin SpencerPrenatal Diagnosis|November 23, 2012
Analytical goal setting in aneuploidy screening: within person biological variability of first trimester biochemical markersKevin Spencer, Nicholas J CowansPrenatal Diagnosis|January 29, 2013
Accuracy of self-reported smoking status in first trimester aneuploidy screeningKevin Spencer, Nicholas J CowansPrenatal Diagnosis|August 10, 2005
Second trimester ultrasound prenasal thickness combined with nasal bone length: a new method of Down syndrome screeningRon Maymon, Orna Levinsohn-Tavor, Howard Cuckle, et al.Prenatal Diagnosis|October 16, 2002
A first trimester trisomy 13/trisomy 18 risk algorithm combining fetal nuchal translucency thickness, maternal serum free beta-hCG and PAPP-AKevin Spencer, Kypros H NicolaidesPrenatal Diagnosis|October 16, 2002
Screening for chromosomal anomalies in the first trimester: does repeat maternal serum screening improve detection rates?Kevin Spencer, Howard S CucklePrenatal Diagnosis|February 26, 2011
The relationship between maternal body mass, smoking status and ethnicity and first trimester nuchal translucency thicknessNicholas J Cowans, Kevin SpencerPageof 17