TY  - RPRT
TI  - Screening for Down's syndrome. Serum screening programmes are effective and safe.
AU  - N J Wald
AU  - A K Hackshaw
AU  - W Huttly
PY  - 2000
UR  - https://pubmed.ncbi.nlm.nih.gov/10999927/
ID  - 10999927
ER  -