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Maternal weight correction of maternal serum PAPP-A and free beta-hCG MoM when screening for trisomy 21 in the first trimester of pregnancy.
Spencer K, Bindra R, Nicolaides KH.
Prenat Diagn 2003;23:851-5. -
Integrated ultrasound and biochemical screening for trisomy 21 using fetal nuchal translucency, absent fetal nasal bone, free beta-hCG and PAPP-A at 11 to 14 weeks.
Cicero S, Bindra R, Rembouskos G, Spencer K, Nicolaides KH.
Prenat Diagn 2003;23:306-10. -
One-stop clinic for assessment of risk for trisomy 21 at 11-14 weeks: a prospective study of 15 030 pregnancies.
Bindra R, Heath V, Liao A, Spencer K, Nicolaides KH.
Ultrasound Obstet Gynecol 2002;20:219-25. -
Maternal serum levels of dimeric inhibin A in pregnancies affected by trisomy 21 in the first trimester.
Spencer K, Liao AW, Ong CY, Geerts L, Nicolaides KH.
Prenat Diagn 2001;21:441-4. -
Maternal serum levels of total activin-A in first-trimester trisomy 21 pregnancies.
Spencer K, Liao AW, Skentou H, Ong CY, Nicolaides KH.
Prenat Diagn 2001;21:270-3. -
First-trimester screening for trisomy 21 in singleton pregnancies achieved by assisted reproduction.
Liao AW, Heath V, Kametas N, Spencer K, Nicolaides KH.
Hum Reprod 2001;16:1501-4. -
First trimester markers of trisomy 21 and the influence of maternal cigarette smoking status.
Spencer K, Ong CYT, Liao AWJ, Papademetriou D, Nicolaides KH.
Prenat Diagn 2000;20:852-3. -
The influence of fetal sex in screening for trisomy 21 by fetal nuchal translucency, maternal serum free beta-hCG and PAPP-A at 10-14 weeks of gestation.
Spencer K, Ong CY, Liao AW, Papademetriou D, Nicolaides KH.
Prenat Diagn 2000;20:673-5. -
Is maternal serum total hCG a marker of trisomy 21 in the first trimester of pregnancy?
Spencer K, Berry E, Crossley JA, Aitken DA, Nicolaides KH.
Prenat Diagn 2000;20:311-7. -
First trimester urine free beta hCG, beta core, and total oestriol in pregnancies affected by Down's syndrome: implications for first-trimester screening with nuchal translucency and serum free beta hCG.
Spencer K, Noble P, Snijders RJ, Nicolaides KH.
Prenat Diagn 1997;17:525-38. -
Screening for fetal trisomy 21 in the first trimester of pregnancy: maternal serum free beta-hCG and fetal nuchal translucency thickness.
Noble PL, Abraha HD, Snijders RJ, Sherwood R, Nicolaides KH.
Ultrasound Obstet Gynecol 1995;6:390-5. -
Placental expression of alpha and beta subunits of human chorionic gonadotrophin in early pregnancies with Down's syndrome.
Brizot ML, Jauniaux E, Mckie AT, Farzaneh F, Nicolaides KH.
Hum Reprod 1995;10:2506-9.