TY  - RPRT
TI  - First trimester screening: economic implications.
AU  - George A Macones
AU  - Anthony Odibo
PY  - 2005
DO  - 10.1053/j.semperi.2005.05.005
UR  - https://pubmed.ncbi.nlm.nih.gov/16104679/
ID  - 16104679
ER  -