TY  - RPRT
TI  - Integrated screening for Down's syndrome.
AU  - T M Jenkins
AU  - R J Wapner
PY  - 1999
DO  - 10.1056/nejm199912163412513
UR  - https://pubmed.ncbi.nlm.nih.gov/10610477/
ID  - 10610477
ER  -