@misc{indiciaed81ef5c97eaf,
  title = {Umbilical artery flow velocity waveforms in labour.},
  author = {F M Fairlie and G D Lang and C D Sheldon},
  year = {1989},
  doi = {10.1111/j.1471-0528.1989.tb01654.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/2930739/},
  note = {Source identifier: 2930739}
}