@misc{indiciae1080be8d953f,
  title = {A prenatal trisomy 21 screening program using alpha-fetoprotein, human chorionic gonadotropin, and free estriol assays on maternal dried blood.},
  author = {A Verloes and R Schoos and C Herens and A Vintens and L Koulischer},
  year = {1995},
  doi = {10.1016/0002-9378(95)90108-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/7531397/},
  note = {Source identifier: 7531397}
}