TY  - RPRT
TI  - Prenatal screening for Down's syndrome.
AU  - R Harris
AU  - T Andrews
PY  - 1988
DO  - 10.1136/adc.63.7_spec_no.705
UR  - https://pubmed.ncbi.nlm.nih.gov/2970827/
ID  - 2970827
ER  -