@misc{indiciae35f28e53f1ed,
  title = {Vacuum extraction.},
  author = {W J Ott},
  year = {1975},
  doi = {10.1097/00006254-197510000-00001},
  url = {https://pubmed.ncbi.nlm.nih.gov/1161223/},
  note = {Source identifier: 1161223}
}