TY  - RPRT
TI  - The second-trimester fetus with Down syndrome: detection using sonographic features.
AU  - B R Benacerraf
PY  - 1996
DO  - 10.1046/j.1469-0705.1996.07020147.x
UR  - https://pubmed.ncbi.nlm.nih.gov/8776242/
ID  - 8776242
ER  -