TY  - RPRT
TI  - First-trimester screening: an overview.
AU  - Bernd Eiben
AU  - Ralf Glaubitz
PY  - 2005
DO  - 10.1369/jhc.4b6420.2005
UR  - https://pubmed.ncbi.nlm.nih.gov/15750002/
ID  - 15750002
ER  -