@misc{indiciae5580a4ad75fb,
  title = {Prolonged labour.},
  author = {B V Lewis},
  year = {1969},
  doi = {10.1136/bmj.3.5668.473-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/5811666/},
  note = {Source identifier: 5811666}
}