@misc{indiciae033da07ea92f, title = {The second-trimester fetus with Down syndrome: detection using sonographic features.}, author = {B R Benacerraf}, year = {1996}, doi = {10.1046/j.1469-0705.1996.07020147.x}, url = {https://pubmed.ncbi.nlm.nih.gov/8776242/}, note = {Source identifier: 8776242} }