@misc{indiciae962dbf857319,
  title = {Cervical incompetence.},
  author = {W H Williams},
  year = {1978},
  doi = {10.1016/0002-9378(78)90840-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/567428/},
  note = {Source identifier: 567428}
}