@misc{indiciaeb2d524f6b080,
  title = {Cervical insufficiency.},
  author = {L P Bengtsson},
  year = {1968},
  doi = {10.3109/00016346809156843},
  url = {https://pubmed.ncbi.nlm.nih.gov/4875705/},
  note = {Source identifier: 4875705}
}