@misc{indiciae9a41672df1b0,
  title = {First-trimester screening for Down's syndrome.},
  author = {Nicholas J Wald},
  year = {2004},
  doi = {10.1056/nejm200402053500621},
  url = {https://pubmed.ncbi.nlm.nih.gov/14762194/},
  note = {Source identifier: 14762194}
}