TY  - RPRT
TI  - Screening for Down's syndrome.
AU  - L Parsons
AU  - J Richards
AU  - R Garlick
PY  - 1992
DO  - 10.1136/bmj.305.6863.1228-a
UR  - https://pubmed.ncbi.nlm.nih.gov/1467742/
ID  - 1467742
ER  -