Now showing items 21-25 of 25
Prenatal screening for Down syndrome in twin pregnancies: Estimates of screening performance based on 61 affected and 7302 unaffected twin pregnancies.
The aims of this study were to determine whether assumptions used in prenatal screening for Down syndrome in twin pregnancies are valid and derive estimates of risk and screening performance in twin pregnancies using ...
Serum marker truncation limits in first trimester antenatal screening for trisomy 18.
OBJECTIVE: To assess whether the accuracy of risk estimation in antenatal screening for trisomy 18 using the Combined test can be improved by revising the truncation limits of two serum markers. METHODS: In an audit of ...
Public health failure in the prevention of neural tube defects: time to abandon the tolerable upper intake level of folate.
The neural tube defects anencephaly and spina bifida are two of the most common serious congenital malformations. Most cases can be prevented by consuming sufficient folic acid immediately before pregnancy and in early ...