@misc{indiciaed057e3813e70,
  title = {Are obstetric spinal headaches avoidable?},
  author = {P Barker},
  year = {1990},
  doi = {10.1177/0310057x9001800426},
  url = {https://pubmed.ncbi.nlm.nih.gov/2268025/},
  note = {Source identifier: 2268025}
}