@misc{indiciaea3a9596d944f,
  title = {A simple low-cost obstetric teaching aid.},
  author = {E Hill and M Lethbridge},
  year = {1992},
  doi = {10.1177/004947559202200114},
  url = {https://pubmed.ncbi.nlm.nih.gov/1542958/},
  note = {Source identifier: 1542958}
}