TY  - RPRT
TI  - [Screening for Down's syndrome in the second trimester].
AU  - A Goldman
AU  - M Hod
AU  - S Friedman
AU  - J Ovadia
PY  - 1991
UR  - https://pubmed.ncbi.nlm.nih.gov/1836449/
ID  - 1836449
ER  -