@misc{indiciaeb08a76f016f0,
  title = {Amniotic fluid AFP in multiple pregnancy.},
  author = {S L Duncan and B Ginz and A M Ward and S M Hingley},
  year = {1977},
  doi = {10.1136/bmj.1.6072.1354},
  url = {https://pubmed.ncbi.nlm.nih.gov/67872/},
  note = {Source identifier: 67872}
}