Is longer time-to-pregnancy in spontaneously conceived pregnancies associated with lower PAPP-A and free β-hCG in first trimester screening for Down syndrome?
Time-to-pregnancy ≥24 months in spontaneously conceived pregnancies is associated with decreased levels of PAPP-A and free β-hCG.
Implementation of the EMH project demonstrated the successful use (as well as the challenging aspects) of the CCD and the RxNorm terminology in the outpatient clinical setting.