@misc{indiciaedf13cbb9119a,
  title = {Breech delivery.},
  author = {M Helfferich and J Favier},
  year = {1971},
  doi = {10.1016/0002-9378(71)90216-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5573612/},
  note = {Source identifier: 5573612}
}