@misc{indiciae5914da6fda64,
  title = {Decrease in gamma-glutamyl transpeptidase activity in early amniotic fluid in fetal trisomy 18 syndrome.},
  author = {H Janlanko and P Aula},
  year = {1982},
  doi = {10.1136/bmj.284.6329.1593},
  url = {https://pubmed.ncbi.nlm.nih.gov/6123360/},
  note = {Source identifier: 6123360}
}