TY  - RPRT
TI  - First trimester screening for fetal abnormalities.
AU  - J Hyett
AU  - B Thilaganathan
PY  - 1999
DO  - 10.1097/00001703-199912000-00005
UR  - https://pubmed.ncbi.nlm.nih.gov/10674833/
ID  - 10674833
ER  -