@misc{indiciae93aa1b0f6fc9,
  title = {Prolonged pregnancy.},
  author = {J F Barrett and S Tyrrell and R J Lilford},
  year = {1987},
  doi = {10.1136/bmj.294.6563.56-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/3101801/},
  note = {Source identifier: 3101801}
}