@misc{indiciae38518eff022a,
  title = {Placental radar.},
  author = {T Chard},
  year = {1993},
  doi = {10.1677/joe.0.1380177},
  url = {https://pubmed.ncbi.nlm.nih.gov/8228725/},
  note = {Source identifier: 8228725}
}