TY  - RPRT
TI  - First-trimester screening for chromosomal abnormalities.
AU  - Kypros H Nicolaides
PY  - 2005
DO  - 10.1053/j.semperi.2005.06.001
UR  - https://pubmed.ncbi.nlm.nih.gov/16104667/
ID  - 16104667
ER  -