Accuracy of self-reported smoking status in first trimester aneuploidy screening

Temporal Effect of Afro-Caribbean Race on Serum Pregnancy-Associated Plasma Protein-A at 9–13 Weeks’ Gestation in Screening for Aneuploidies

(2012) Susan Ball et al.   FETAL DIAGNOSIS AND THERAPY

Effect of gestational age on first trimester maternal serum prenatal screening correction factors for ethnicity and IVF conception

(2012) Nicholas J. Cowans et al.   PRENATAL DIAGNOSIS

Temporal effects of maternal and pregnancy characteristics on serum pregnancy-associated plasma protein-A and free β-human chorionic gonadotropin at 7-14 weeks' gestation

(2012) S. Ball et al.   ULTRASOUND IN OBSTETRICS & GYNECOLOGY

Impact of bias in serum free beta-human chorionic gonadotropin and pregnancy-associated plasma protein-A multiples of the median levels on first-trimester screening for trisomy 21

(2011) D. Wright et al.   ULTRASOUND IN OBSTETRICS & GYNECOLOGY

First-trimester combined screening for trisomy 21 at 7-14 weeks' gestation

(2010) D. Wright et al.   ULTRASOUND IN OBSTETRICS & GYNECOLOGY

Optimal Serum Cotinine Levels for Distinguishing Cigarette Smokers and Nonsmokers Within Different Racial/Ethnic Groups in the United States Between 1999 and 2004

(2008) Neal L. Benowitz et al.   AMERICAN JOURNAL OF EPIDEMIOLOGY

A mixture model of nuchal translucency thickness in screening for chromosomal defects

(2008) D. Wright et al.   ULTRASOUND IN OBSTETRICS & GYNECOLOGY

First-trimester screening for trisomy 21 by free beta-human chorionic gonadotropin and pregnancy-associated plasma protein-A: impact of maternal and pregnancy characteristics

(2008) K. O. Kagan et al.   ULTRASOUND IN OBSTETRICS & GYNECOLOGY

Screening for trisomy 21 by maternal age, fetal nuchal translucency thickness, free beta-human chorionic gonadotropin and pregnancy-associated plasma protein-A

(2008) K. O. Kagan et al.   ULTRASOUND IN OBSTETRICS & GYNECOLOGY