TY  - RPRT
TI  - Screening for Down's syndrome.
AU  - T Chard
AU  - M C Macintosh
PY  - 1995
DO  - 10.1515/jpme.1995.23.6.421
UR  - https://pubmed.ncbi.nlm.nih.gov/8904471/
ID  - 8904471
ER  -