TY  - RPRT
TI  - Pre-natal screening for Down's syndrome.
AU  - A Phillips
AU  - A Wakeman
PY  - 1994
DO  - 10.1093/oxfordjournals.pubmed.a042915
UR  - https://pubmed.ncbi.nlm.nih.gov/8080557/
ID  - 8080557
ER  -